diff --git a/README.md b/README.md
index 3f789c8..31d65ad 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,7 @@ The goal is to closely mimic the look and behavior of the original game, but not
 
 ## License
 
-The original "Kroz" copyright 1987 - 2022 Apogee Entertainment Inc. All trademarks and copyrights reserved.
+"Kroz" is a registered trademark of Apogee Software, Ltd.  
+The original "Kroz" copyright 1987 - 2009 Apogee Software, Ltd. All trademarks and copyrights reserved.
 
-This project has no affiliation with Apogee Entertainment Inc. and the code within is licensed under the [GNU General Public License Version 3](https://www.gnu.org/licenses/gpl-3.0.en.html).
+This project has no affiliation with Apogee Software, Ltd and its code is licensed under the [GNU General Public License Version 3](https://www.gnu.org/licenses/gpl-3.0.en.html).
diff --git a/src/main.rs b/src/main.rs
index 136d7d9..2e29d1c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,7 +6,6 @@ pub mod resources;
 mod sidebar;
 mod state;
 pub mod systems;
-pub mod tile_data;
 pub mod vga_color;
 
 use bracket_lib::prelude::*;
@@ -14,11 +13,11 @@ use components::{
     monster::{color_for_kind, glyphs_for_kind, ticks_for_kind, MonsterKind},
     Monster, Player, Position, Renderable,
 };
+use resources::map::TileType;
 use resources::{Clock, LevelNumber, Map, ShowDebugInfo, SoundEffects, SoundOutput, Stats};
 use specs::prelude::*;
 use state::State;
 use std::time::Instant;
-use tile_data::TileType;
 
 use vga_color as vga;
 
@@ -62,12 +61,7 @@ fn main() -> BError {
     for (i, tile) in &mut map.get_tiles().iter().enumerate() {
         if rng.roll_dice(1, 16) < 2 && *tile == TileType::Floor {
             let position = map.index_to_point2d(i);
-            let kind = match rng.range(0, 3) {
-                0 => MonsterKind::Slow,
-                1 => MonsterKind::Medium,
-                2 => MonsterKind::Fast,
-                _ => MonsterKind::Slow,
-            };
+            let kind = MonsterKind::Slow;
             ecs.create_entity()
                 .with(Position {
                     x: position.x,
diff --git a/src/resources/map.rs b/src/resources/map.rs
index 3e72d57..5ac0194 100644
--- a/src/resources/map.rs
+++ b/src/resources/map.rs
@@ -1,11 +1,17 @@
 use crate::{
     constants::{MAP_HEIGHT, MAP_SIZE, MAP_WIDTH, MAP_X, MAP_Y},
-    tile_data::{self, TileType},
     vga_color as vga,
 };
 use bracket_lib::{prelude::*, random::RandomNumberGenerator};
 use specs::Entity;
 
+#[derive(PartialEq, Copy, Clone)]
+pub enum TileType {
+    Wall,
+    BreakableWall,
+    Floor,
+}
+
 pub struct Map {
     tiles: Vec<TileType>,
     tile_content: Vec<Option<Entity>>,
@@ -35,7 +41,7 @@ impl Map {
             if rng.roll_dice(1, 16) < 2 {
                 *tile = TileType::Wall;
             } else if rng.roll_dice(1, 16) < 2 {
-                *tile = TileType::Block;
+                *tile = TileType::BreakableWall;
             }
         }
         Self {
@@ -82,14 +88,35 @@ impl Map {
             let point = self.index_to_point2d(i);
             let (x, y) = (point.x as usize, point.y as usize);
 
-            let data = tile_data::tile_data(*tile);
-            ctx.set(
-                x + MAP_X,
-                y + MAP_Y,
-                data.color_fg,
-                data.color_bg,
-                data.glyph,
-            );
+            match tile {
+                TileType::Floor => {
+                    ctx.set(
+                        x + MAP_X,
+                        y + MAP_Y,
+                        RGB::named(vga::BLACK),
+                        RGB::named(vga::BLACK),
+                        to_cp437(' '),
+                    );
+                }
+                TileType::BreakableWall => {
+                    ctx.set(
+                        x + MAP_X,
+                        y + MAP_Y,
+                        RGB::named(vga::YELLOW),
+                        RGB::named(vga::BLACK),
+                        to_cp437('▓'),
+                    );
+                }
+                TileType::Wall => {
+                    ctx.set(
+                        x + MAP_X,
+                        y + MAP_Y,
+                        RGB::named(vga::YELLOW),
+                        RGB::named(vga::BLACK),
+                        to_cp437('█'),
+                    );
+                }
+            }
         }
     }
 
@@ -103,6 +130,9 @@ impl Map {
     }
 
     pub fn is_solid(&self, point: Point) -> bool {
-        matches!(self.get_tile_at(point), TileType::Wall | TileType::Block)
+        matches!(
+            self.get_tile_at(point),
+            TileType::Wall | TileType::BreakableWall
+        )
     }
 }
diff --git a/src/resources/mod.rs b/src/resources/mod.rs
index 330b80e..f497725 100644
--- a/src/resources/mod.rs
+++ b/src/resources/mod.rs
@@ -48,18 +48,3 @@ pub struct Stats {
     pub teleports: u32,
     pub keys: u32,
 }
-
-type PlayerSurvived = bool;
-
-impl Stats {
-    pub fn take_gems(&mut self, num_gems: u32) -> PlayerSurvived {
-        let new_num_gems = self.gems as i64 - num_gems as i64;
-        if new_num_gems <= 0 {
-            self.gems = 0;
-            false
-        } else {
-            self.gems = new_num_gems as u32;
-            true
-        }
-    }
-}
diff --git a/src/state.rs b/src/state.rs
index e69f991..afa3d62 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -111,7 +111,9 @@ impl State {
                     } else {
                         if let Some(e) = map.get_tile_content(map.point2d_to_index(destination)) {
                             if let Some(monster) = monsters.get(e) {
-                                stats.take_gems(damage_for_kind(monster.kind));
+                                if stats.gems > 0 {
+                                    stats.gems -= damage_for_kind(monster.kind);
+                                }
                                 let _ = entities.delete(e);
                             }
                         }
diff --git a/src/systems/monster_ai_system.rs b/src/systems/monster_ai_system.rs
index 243aaeb..9b0eeb2 100644
--- a/src/systems/monster_ai_system.rs
+++ b/src/systems/monster_ai_system.rs
@@ -3,8 +3,8 @@ use crate::{
         monster::{self, damage_for_kind, ticks_for_kind},
         Monster, Player, Position, Renderable,
     },
+    resources::map::TileType,
     resources::{Clock, Map, Stats},
-    tile_data::TileType,
 };
 use bracket_lib::{prelude::*, random::RandomNumberGenerator};
 use specs::prelude::*;
@@ -77,17 +77,19 @@ impl<'a> System<'a> for MonsterAiSystem {
                     if let Some(e) = map.get_tile_content(map.point2d_to_index(destination)) {
                         if let Some(_player) = players.get(e) {
                             // TODO: Sound
-                            stats.take_gems(damage_for_kind(monster.kind));
+                            if stats.gems > 0 {
+                                stats.gems -= damage_for_kind(monster.kind);
+                            }
                             let _ = entities.delete(*entity);
                         }
                     } else {
                         match map.get_tile_at(destination) {
                             TileType::Wall => {}
-                            TileType::Block => {
+                            TileType::BreakableWall => {
                                 // TODO: Sound
                                 let _ = entities.delete(*entity);
                             }
-                            _ => {
+                            TileType::Floor => {
                                 position.x = destination.x;
                                 position.y = destination.y;
                             }
diff --git a/src/tile_data.rs b/src/tile_data.rs
deleted file mode 100644
index 6fe105d..0000000
--- a/src/tile_data.rs
+++ /dev/null
@@ -1,405 +0,0 @@
-use bracket_lib::prelude::*;
-
-use crate::vga_color as vga;
-
-#[derive(PartialEq, Copy, Clone)]
-pub struct TileData {
-    pub glyph: u16,
-    pub color_fg: (u8, u8, u8),
-    pub color_bg: (u8, u8, u8),
-    pub serialized_char: char,
-    pub blink: bool,
-}
-
-#[derive(PartialEq, Copy, Clone)]
-pub enum TileType {
-    Floor,          // 0
-    Block,          // 4
-    Whip,           // 5
-    Stairs,         // 6
-    Chest,          // 7
-    SlowTime,       // 8
-    Gem,            // 9
-    Invisible,      // 10
-    Teleport,       // 11
-    Key,            // 12
-    Door,           // 13
-    Wall,           // 14
-    SpeedTime,      // 15
-    Trap,           // 16
-    River,          // 17
-    Power,          // 18
-    Forest,         // 19
-    Tree,           // 20, 252
-    Bomb,           // 21
-    Lava,           // 22
-    Pit,            // 23
-    Tome,           // 24
-    Tunnel,         // 25
-    Freeze,         // 26
-    Nugget,         // 27
-    Quake,          // 28
-    InvisibleBlock, // 29
-    InvisibleWall,  // 30
-    InvisibleDoor,  // 31
-    Stop,           // 32
-    Zap,            // 34
-    Create,         // 35
-    Generator,      // 36
-    Trap2,          // 33
-    Trap3,          // 37
-    Trap4,          // 39
-    Trap5,          // 67
-    Trap6,          // 224
-    Trap7,          // 225
-    Trap8,          // 226
-    Trap9,          // 227
-    Trap10,         // 228
-    Trap11,         // 229
-    Trap12,         // 230
-    Trap13,         // 231
-    Player,         // 40
-    Punctuation,    // 222
-    Letter(char),
-}
-
-pub fn tile_data(tile: TileType) -> TileData {
-    match tile {
-        TileType::Floor => TileData {
-            glyph: 0,
-            serialized_char: ' ',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Block => TileData {
-            glyph: to_cp437('▓'),
-            serialized_char: 'X',
-            color_fg: vga::YELLOW,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Whip => TileData {
-            glyph: to_cp437('⌠'),
-            serialized_char: 'W',
-            color_fg: vga::WHITE_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Stairs => TileData {
-            glyph: to_cp437('≡'),
-            serialized_char: 'L',
-            color_fg: vga::BLACK,
-            color_bg: vga::WHITE,
-            blink: true,
-        },
-        TileType::Chest => TileData {
-            glyph: to_cp437('C'),
-            serialized_char: 'C',
-            color_fg: vga::YELLOW_BRIGHT,
-            color_bg: vga::RED,
-            blink: false,
-        },
-        TileType::SlowTime => TileData {
-            glyph: to_cp437('Φ'),
-            serialized_char: 'S',
-            color_fg: vga::CYAN_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Gem => TileData {
-            glyph: to_cp437('♦'),
-            serialized_char: '+',
-            color_fg: vga::WHITE,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Invisible => TileData {
-            glyph: to_cp437('¡'),
-            serialized_char: 'I',
-            color_fg: vga::GREEN,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Teleport => TileData {
-            glyph: to_cp437('↑'),
-            serialized_char: 'T',
-            color_fg: vga::MAGENTA_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Key => TileData {
-            glyph: to_cp437('î'),
-            serialized_char: 'K',
-            color_fg: vga::RED_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Door => TileData {
-            glyph: to_cp437('∞'),
-            serialized_char: 'D',
-            color_fg: vga::CYAN,
-            color_bg: vga::MAGENTA,
-            blink: false,
-        },
-        TileType::Wall => TileData {
-            glyph: to_cp437('█'),
-            serialized_char: '#',
-            color_fg: vga::YELLOW,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::SpeedTime => TileData {
-            glyph: to_cp437('Θ'),
-            serialized_char: 'F',
-            color_fg: vga::CYAN_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap => TileData {
-            glyph: to_cp437('∙'),
-            serialized_char: '.',
-            color_fg: vga::WHITE,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::River => TileData {
-            glyph: to_cp437('≈'),
-            serialized_char: 'R',
-            color_fg: vga::BLUE_BRIGHT,
-            color_bg: vga::BLUE,
-            blink: false,
-        },
-        TileType::Power => TileData {
-            glyph: to_cp437('○'),
-            serialized_char: 'Q',
-            color_fg: vga::WHITE_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Forest => TileData {
-            glyph: to_cp437('█'),
-            serialized_char: '/',
-            color_fg: vga::GREEN,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Tree => TileData {
-            glyph: to_cp437('♣'),
-            serialized_char: '\\',
-            color_fg: vga::YELLOW,
-            color_bg: vga::GREEN,
-            blink: false,
-        },
-        TileType::Bomb => TileData {
-            glyph: to_cp437('¥'),
-            serialized_char: 'B',
-            color_fg: vga::WHITE_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Lava => TileData {
-            glyph: to_cp437('▓'),
-            serialized_char: 'V',
-            color_fg: vga::RED_BRIGHT,
-            color_bg: vga::RED,
-            blink: false,
-        },
-        TileType::Pit => TileData {
-            glyph: to_cp437('░'),
-            serialized_char: '=',
-            color_fg: vga::WHITE,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Tome => TileData {
-            glyph: to_cp437('♀'),
-            serialized_char: 'A',
-            color_fg: vga::WHITE_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: true,
-        },
-        TileType::Tunnel => TileData {
-            glyph: to_cp437('∩'),
-            serialized_char: 'U',
-            color_fg: vga::WHITE_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Freeze => TileData {
-            glyph: to_cp437('ƒ'),
-            serialized_char: 'Z',
-            color_fg: vga::CYAN_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Nugget => TileData {
-            glyph: to_cp437('☼'),
-            serialized_char: '*',
-            color_fg: vga::YELLOW_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Quake => TileData {
-            glyph: 0,
-            serialized_char: 'E',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::InvisibleBlock => TileData {
-            glyph: 0,
-            serialized_char: ';',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::InvisibleWall => TileData {
-            glyph: 0,
-            serialized_char: ':',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::InvisibleDoor => TileData {
-            glyph: 0,
-            serialized_char: '`',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Stop => TileData {
-            glyph: 0,
-            serialized_char: '-',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Zap => TileData {
-            glyph: to_cp437('▲'),
-            serialized_char: '%',
-            color_fg: vga::RED_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Create => TileData {
-            glyph: to_cp437('▼'),
-            serialized_char: ']',
-            color_fg: vga::WHITE_BRIGHT,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Generator => TileData {
-            glyph: to_cp437('♠'),
-            serialized_char: 'G',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap2 => TileData {
-            glyph: 0,
-            serialized_char: '@',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap3 => TileData {
-            glyph: 0,
-            serialized_char: ')',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap4 => TileData {
-            glyph: 0,
-            serialized_char: '(',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap5 => TileData {
-            glyph: 0,
-            serialized_char: '$', // Unsure about this
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap6 => TileData {
-            glyph: 0,
-            serialized_char: 'α',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap7 => TileData {
-            glyph: 0,
-            serialized_char: 'ß',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap8 => TileData {
-            glyph: 0,
-            serialized_char: 'Γ',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap9 => TileData {
-            glyph: 0,
-            serialized_char: 'π',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap10 => TileData {
-            glyph: 0,
-            serialized_char: 'Σ',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap11 => TileData {
-            glyph: 0,
-            serialized_char: 'σ',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap12 => TileData {
-            glyph: 0,
-            serialized_char: 'µ',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Trap13 => TileData {
-            glyph: 0,
-            serialized_char: 'τ',
-            color_fg: vga::BLACK,
-            color_bg: vga::BLACK,
-            blink: false,
-        },
-        TileType::Player => TileData {
-            glyph: to_cp437('≡'),
-            serialized_char: 'P',
-            color_fg: vga::BLACK,
-            color_bg: vga::WHITE,
-            blink: true,
-        },
-        TileType::Punctuation => TileData {
-            glyph: to_cp437('!'),
-            serialized_char: '!',
-            color_fg: vga::WHITE_BRIGHT,
-            color_bg: vga::YELLOW,
-            blink: false,
-        },
-        TileType::Letter(c) => TileData {
-            glyph: to_cp437(c),
-            serialized_char: c,
-            color_fg: vga::WHITE_BRIGHT,
-            color_bg: vga::YELLOW,
-            blink: false,
-        },
-    }
-}