diff --git a/README.md b/README.md
index 802e5672be43024a3abaf64c07e36500a4e49368..78f3730a13a7f9330fbe49c1a06da55d85afb08a 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,10 @@ - Check that `path` in `GameEngineProfiles.cfg` points to game executable.
 - Open Trenchbroom and go to `View>Preferences` and check that `Game Path`
   points to project root.
 
+## Making materials/textures
+
+- https://www.youtube.com/watch?v=S6Eu8Cti9nI
+
 ## Trenchbroom entities
 
 - https://developer.valvesoftware.com/wiki/FGD
diff --git a/maps/deck1.map b/maps/deck1.map
new file mode 100644
index 0000000000000000000000000000000000000000..8f48e8fd0647fe7ed2a8d057afe0d90220db2b0a
--- /dev/null
+++ b/maps/deck1.map
@@ -0,0 +1,39 @@
+// Game: Stalag
+// Format: Standard
+// entity 0
+{
+"classname" "worldspawn"
+// brush 0
+{
+( -80 -64 -16 ) ( -80 -63 -16 ) ( -80 -64 -15 ) __TB_empty 0 0 0 1 1
+( -64 -544 -16 ) ( -64 -544 -15 ) ( -63 -544 -16 ) __TB_empty 0 0 0 1 1
+( -64 -64 -16 ) ( -63 -64 -16 ) ( -64 -63 -16 ) __TB_empty 0 0 0 1 1
+( 64 64 0 ) ( 64 65 0 ) ( 65 64 0 ) __TB_empty 0 0 0 1 1
+( 64 704 16 ) ( 65 704 16 ) ( 64 704 17 ) __TB_empty 0 0 0 1 1
+( 80 64 16 ) ( 80 64 17 ) ( 80 65 16 ) __TB_empty 0 0 0 1 1
+}
+// brush 1
+{
+( 80 -544 -16 ) ( 80 -543 -16 ) ( 80 -544 -15 ) __TB_empty 0 -16 0 1 1
+( 80 -544 -16 ) ( 80 -544 -15 ) ( 81 -544 -16 ) __TB_empty 16 -16 0 1 1
+( 80 -544 -16 ) ( 81 -544 -16 ) ( 80 -543 -16 ) __TB_empty 16 0 0 1 1
+( 96 112 128 ) ( 96 113 128 ) ( 97 112 128 ) __TB_empty 16 0 0 1 1
+( 96 528 0 ) ( 97 528 0 ) ( 96 528 1 ) __TB_empty 16 -16 0 1 1
+( 96 112 0 ) ( 96 112 1 ) ( 96 113 0 ) __TB_empty 0 -16 0 1 1
+}
+// brush 2
+{
+( -96 -544 -16 ) ( -96 -543 -16 ) ( -96 -544 -15 ) __TB_empty 0 16 0 1 1
+( -96 -544 -16 ) ( -96 -544 -15 ) ( -95 -544 -16 ) __TB_empty 0 16 0 1 1
+( -96 -544 -16 ) ( -95 -544 -16 ) ( -96 -543 -16 ) __TB_empty 0 0 0 1 1
+( -80 112 128 ) ( -80 113 128 ) ( -79 112 128 ) __TB_empty 0 0 0 1 1
+( -80 528 0 ) ( -79 528 0 ) ( -80 528 1 ) __TB_empty 0 16 0 1 1
+( -80 112 0 ) ( -80 112 1 ) ( -80 113 0 ) __TB_empty 0 16 0 1 1
+}
+}
+// entity 1
+{
+"classname" "info_player_start"
+"origin" "0 -512 16"
+"angle" "90"
+}
diff --git a/maps/demo4.map b/maps/demo4.map
index 0b8101030cfe966fa51fef8da7c94e26118ffd18..7bc84232df141cd3e7a084d21881fbdb1c08c655 100644
--- a/maps/demo4.map
+++ b/maps/demo4.map
@@ -5,61 +5,71 @@ {
 "classname" "worldspawn"
 // brush 0
 {
-( -128 -80 -16 ) ( -128 -79 -16 ) ( -128 -80 -15 ) __TB_empty -16 0 0 1 1
-( -64 -80 -16 ) ( -64 -80 -15 ) ( -63 -80 -16 ) __TB_empty 0 0 0 1 1
-( -64 -80 -16 ) ( -63 -80 -16 ) ( -64 -79 -16 ) __TB_empty 0 16 0 1 1
-( 64 48 0 ) ( 64 49 0 ) ( 65 48 0 ) __TB_empty 0 16 0 1 1
-( 64 656 16 ) ( 65 656 16 ) ( 64 656 17 ) __TB_empty 0 0 0 1 1
-( 64 48 16 ) ( 64 48 17 ) ( 64 49 16 ) __TB_empty -16 0 0 1 1
+( -128 -80 0 ) ( -128 -79 0 ) ( -128 -80 1 ) interior/wall_01 0 0 0 1 1
+( -128 -80 0 ) ( -128 -80 1 ) ( -127 -80 0 ) interior/wall_01 0 0 0 1 1
+( -128 -80 0 ) ( -127 -80 0 ) ( -128 -79 0 ) interior/wall_01 0 0 0 1 1
+( -112 48 112 ) ( -112 49 112 ) ( -111 48 112 ) interior/wall_01 0 0 0 1 1
+( -112 656 16 ) ( -111 656 16 ) ( -112 656 17 ) interior/wall_01 0 0 0 1 1
+( -112 48 16 ) ( -112 48 17 ) ( -112 49 16 ) interior/wall_01 0 0 0 1 1
 }
 // brush 1
 {
-( -128 -80 0 ) ( -128 -79 0 ) ( -128 -80 1 ) interior/interior_wall_003 0 0 0 1 1
-( -128 -80 0 ) ( -128 -80 1 ) ( -127 -80 0 ) interior/interior_wall_003 0 0 0 1 1
-( -128 -80 0 ) ( -127 -80 0 ) ( -128 -79 0 ) interior/interior_wall_003 0 0 0 1 1
-( -112 48 112 ) ( -112 49 112 ) ( -111 48 112 ) interior/interior_wall_003 0 0 0 1 1
-( -112 656 16 ) ( -111 656 16 ) ( -112 656 17 ) interior/interior_wall_003 0 0 0 1 1
-( -112 48 16 ) ( -112 48 17 ) ( -112 49 16 ) interior/interior_wall_003 0 0 0 1 1
+( 48 -80 0 ) ( 48 -79 0 ) ( 48 -80 1 ) interior/wall_01 0 0 0 1 1
+( 48 -80 0 ) ( 48 -80 1 ) ( 49 -80 0 ) interior/wall_01 0 0 0 1 1
+( 48 -80 0 ) ( 49 -80 0 ) ( 48 -79 0 ) interior/wall_01 0 0 0 1 1
+( 64 48 112 ) ( 64 49 112 ) ( 65 48 112 ) interior/wall_01 0 0 0 1 1
+( 64 656 16 ) ( 65 656 16 ) ( 64 656 17 ) interior/wall_01 0 0 0 1 1
+( 64 48 16 ) ( 64 48 17 ) ( 64 49 16 ) interior/wall_01 0 0 0 1 1
 }
 // brush 2
 {
-( 48 -80 0 ) ( 48 -79 0 ) ( 48 -80 1 ) interior/interior_wall_003 0 0 0 1 1
-( 48 -80 0 ) ( 48 -80 1 ) ( 49 -80 0 ) interior/interior_wall_003 0 0 0 1 1
-( 48 -80 0 ) ( 49 -80 0 ) ( 48 -79 0 ) interior/interior_wall_003 0 0 0 1 1
-( 64 48 112 ) ( 64 49 112 ) ( 65 48 112 ) interior/interior_wall_003 0 0 0 1 1
-( 64 656 16 ) ( 65 656 16 ) ( 64 656 17 ) interior/interior_wall_003 0 0 0 1 1
-( 64 48 16 ) ( 64 48 17 ) ( 64 49 16 ) interior/interior_wall_003 0 0 0 1 1
+( 48 480 112 ) ( 48 481 112 ) ( 47 480 113 ) interior/wall_01 0 0 90 1 1
+( 48 -80 112 ) ( 47 -80 113 ) ( 49 -80 112 ) interior/wall_01 16 6.4000015 0 1 1.25
+( 48 480 112 ) ( 49 480 112 ) ( 48 481 112 ) interior/wall_01 0 0 0 1 1
+( 32 656 144 ) ( 32 657 144 ) ( 33 656 144 ) interior/wall_01 0 0 0 1 1
+( 48 656 128 ) ( 49 656 128 ) ( 47 656 129 ) interior/wall_01 16 6.4000015 0 1 1.25
+( 48 656 128 ) ( 47 656 129 ) ( 48 657 128 ) interior/wall_01 0 -16 90 1 1
 }
 // brush 3
 {
-( 48 480 112 ) ( 48 481 112 ) ( 47 480 113 ) interior/interior_wall_001 0 0 90 1 1
-( 48 480 112 ) ( 47 480 113 ) ( 49 480 112 ) interior/interior_wall_001 16 6.4000015 0 1 1.25
-( 48 480 112 ) ( 49 480 112 ) ( 48 481 112 ) interior/interior_wall_001 0 0 0 1 1
-( 32 656 144 ) ( 32 657 144 ) ( 33 656 144 ) interior/interior_wall_001 0 0 0 1 1
-( 48 656 128 ) ( 49 656 128 ) ( 47 656 129 ) interior/interior_wall_001 16 6.4000015 0 1 1.25
-( 48 656 128 ) ( 47 656 129 ) ( 48 657 128 ) interior/interior_wall_001 0 -16 90 1 1
+( -112 480 128 ) ( -111 480 129 ) ( -112 479 128 ) interior/wall_01 -16 -16 270 1 1
+( -112 -80 128 ) ( -113 -80 128 ) ( -111 -80 129 ) interior/wall_01 -16 6.4000015 180 1 -1.25
+( -112 656 112 ) ( -113 656 112 ) ( -112 655 112 ) interior/wall_01 0 16 180 1 1
+( -96 480 144 ) ( -96 479 144 ) ( -97 480 144 ) interior/wall_01 0 16 180 1 1
+( -112 656 112 ) ( -111 656 113 ) ( -113 656 112 ) interior/wall_01 -16 6.4000015 180 1 -1.25
+( -112 656 112 ) ( -112 655 112 ) ( -111 656 113 ) interior/wall_01 -16 0 270 1 1
 }
 // brush 4
 {
-( -112 480 128 ) ( -111 480 129 ) ( -112 479 128 ) interior/interior_wall_001 -16 -16 270 1 1
-( -112 480 128 ) ( -113 480 128 ) ( -111 480 129 ) interior/interior_wall_001 -16 6.4000015 180 1 -1.25
-( -112 656 112 ) ( -113 656 112 ) ( -112 655 112 ) interior/interior_wall_001 0 16 180 1 1
-( -96 480 144 ) ( -96 479 144 ) ( -97 480 144 ) interior/interior_wall_001 0 16 180 1 1
-( -112 656 112 ) ( -111 656 113 ) ( -113 656 112 ) interior/interior_wall_001 -16 6.4000015 180 1 -1.25
-( -112 656 112 ) ( -112 655 112 ) ( -111 656 113 ) interior/interior_wall_001 -16 0 270 1 1
+( -96 480 144 ) ( -96 481 144 ) ( -96 480 145 ) interior/wall_01 0 0 0 1 1
+( -96 -80 144 ) ( -96 -80 145 ) ( -95 -80 144 ) interior/wall_01 0 0 0 1 1
+( -96 480 144 ) ( -95 480 144 ) ( -96 481 144 ) interior/wall_01 0 0 0 1 1
+( 32 656 160 ) ( 32 657 160 ) ( 33 656 160 ) interior/wall_01 0 0 0 1 1
+( 32 656 160 ) ( 33 656 160 ) ( 32 656 161 ) interior/wall_01 0 0 0 1 1
+( 32 656 160 ) ( 32 656 161 ) ( 32 657 160 ) interior/wall_01 0 0 0 1 1
 }
 // brush 5
 {
-( -96 480 144 ) ( -96 481 144 ) ( -96 480 145 ) interior/interior_wall_001 0 0 0 1 1
-( -96 480 144 ) ( -96 480 145 ) ( -95 480 144 ) interior/interior_wall_001 0 0 0 1 1
-( -96 480 144 ) ( -95 480 144 ) ( -96 481 144 ) interior/interior_wall_001 0 0 0 1 1
-( 32 656 160 ) ( 32 657 160 ) ( 33 656 160 ) interior/interior_wall_001 0 0 0 1 1
-( 32 656 160 ) ( 33 656 160 ) ( 32 656 161 ) interior/interior_wall_001 0 0 0 1 1
-( 32 656 160 ) ( 32 656 161 ) ( 32 657 160 ) interior/interior_wall_001 0 0 0 1 1
+( -128 656 -16 ) ( -128 657 -16 ) ( -128 656 -15 ) interior/wall_02 0 0 0 1 1
+( -128 656 -16 ) ( -128 656 -15 ) ( -127 656 -16 ) interior/wall_02 0 0 0 1 1
+( -128 656 -16 ) ( -127 656 -16 ) ( -128 657 -16 ) interior/wall_02 0 0 0 1 1
+( 64 672 160 ) ( 64 673 160 ) ( 65 672 160 ) interior/wall_02 0 0 0 1 1
+( 64 672 0 ) ( 65 672 0 ) ( 64 672 1 ) interior/wall_02 0 0 0 1 1
+( 64 672 0 ) ( 64 672 1 ) ( 64 673 0 ) interior/wall_02 0 0 0 1 1
+}
+// brush 6
+{
+( -128 -80 -16 ) ( -128 -79 -16 ) ( -128 -80 -15 ) interior/wall_00 -16 0 0 1 1
+( -64 -80 -16 ) ( -64 -80 -15 ) ( -63 -80 -16 ) interior/wall_00 0 0 0 1 1
+( -64 -80 -16 ) ( -63 -80 -16 ) ( -64 -79 -16 ) interior/wall_00 0 16 0 1 1
+( 64 48 0 ) ( 64 49 0 ) ( 65 48 0 ) interior/wall_00 0 16 0 1 1
+( 64 656 16 ) ( 65 656 16 ) ( 64 656 17 ) interior/wall_00 0 0 0 1 1
+( 64 48 16 ) ( 64 48 17 ) ( 64 49 16 ) interior/wall_00 -16 0 0 1 1
 }
 }
 // entity 1
 {
 "classname" "info_player_start"
 "origin" "-32 624 16"
+"angle" "270"
 }
diff --git a/palette.gpl b/palette.gpl
new file mode 100644
index 0000000000000000000000000000000000000000..9629b8a7febd69e411ff055fea25c2880aa2beb2
--- /dev/null
+++ b/palette.gpl
@@ -0,0 +1,57 @@
+GIMP Palette
+Name: Palette
+Columns: 8
+
+236 239 241 Hull Off-White #ECEFF1
+214 217 219 Edge Wear Light #D6D9DB
+199 203 206 Soft Panel #C7CBCE
+173 179 183 Light Panel #ADB3B7
+154 164 171 Panel Mid #9AA4AB
+132 140 147 Mid Desat #848C93
+107 119 128 Main Deck Steel #6B7780
+90 96 102 Scuff Steel #5A6066
+
+127 139 145 Cool Metal #7F8B91
+166 155 146 Warm Metal #A69B92
+115 111 107 Worn Metal #736F6B
+79 80 84 Dark Metal #4F5054
+58 49 40 Oil Stain #3A3128
+107 95 84 Neutral Dirt #6B5F54
+86 78 73 Brown Grime #564E49
+122 75 46 Rust Tint #7A4B2E
+
+42 57 70 Dark Slate #2A3946
+30 36 44 Shadow Cool #1E242C
+17 19 24 Grip Rubber #111318
+10 10 10 Shadow Black #0A0A0A
+15 36 51 Dim Screen #0F2433
+46 60 72 Navy Panel #2E3C48
+64 76 86 Steel Blue #404C56
+95 99 104 Gunmetal #5F6368
+
+95 208 122 Console Green #5FD07A
+68 176 95 Console Green Dark #44B05F
+40 140 80 Console Green Deep #288C50
+79 208 255 Panel Glow Accent #4FD0FF
+30 144 255 Primary Blue #1E90FF
+0 229 255 Cyan Glow #00E5FF
+155 231 255 Phaser Glow #9BE7FF
+120 200 230 Soft Cyan #78C8E6
+
+255 200 87 Tricorder Amber #FFC857
+255 210 74 Warning Stripe Yellow #FFD24A
+230 180 60 Yellow Warm #E6B43C
+224 138 0 Engineering Orange #E08A00
+200 90 10 Hazard Orange #C85A0A
+214 69 60 Marker Red #D6453C
+180 40 40 Deep Alert Red #B42828
+150 30 30 Warning Deep #961E1E
+
+160 150 140 Panel Tint #A0968C
+200 195 190 Soft Beige #C8C3BE
+145 135 125 Tan Grime #91877D
+130 120 110 Dust Brown #82786E
+59 122 90 Corrosion Green #3B7A5A
+40 60 50 Moss Tint #283C32
+90 110 100 Olive Grime #5A6E64
+255 255 255 Pure White #FFFFFF
\ No newline at end of file
diff --git a/textures/interior/floor_01.ase b/textures/interior/floor_01.ase
new file mode 100644
index 0000000000000000000000000000000000000000..140827ecb796cb764cd58e66dec6bae42de5b9ce
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diff --git a/textures/interior/floor_01.png b/textures/interior/floor_01.png
new file mode 100644
index 0000000000000000000000000000000000000000..f01989cb9972c813383ca3030b9d3851745d52da
Binary files /dev/null and b/textures/interior/floor_01.png differ
diff --git a/textures/interior/floor_02.ase b/textures/interior/floor_02.ase
new file mode 100644
index 0000000000000000000000000000000000000000..03fd2f0a1b345e6f1acca0cb5b51bc364a81ce2f
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diff --git a/textures/interior/floor_02.png b/textures/interior/floor_02.png
new file mode 100644
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diff --git a/textures/interior/floor_03.ase b/textures/interior/floor_03.ase
new file mode 100644
index 0000000000000000000000000000000000000000..0643774c4b4715f87041255b191dda19e6fc5ef9
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diff --git a/textures/interior/floor_03.png b/textures/interior/floor_03.png
new file mode 100644
index 0000000000000000000000000000000000000000..8684b3bc97d892abd7352e361730e53daeaef253
Binary files /dev/null and b/textures/interior/floor_03.png differ
diff --git a/textures/interior/interior_wall.xcf b/textures/interior/interior_wall.xcf
deleted file mode 100644
index bbe128a9aaa061ab70adc60debdf22cc1fc85624..0000000000000000000000000000000000000000
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diff --git a/textures/interior/interior_wall_001.png b/textures/interior/interior_wall_001.png
deleted file mode 100644
index 9ec4a362be319c2a232e222736c5a411983db1b1..0000000000000000000000000000000000000000
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diff --git a/textures/interior/interior_wall_002.png b/textures/interior/interior_wall_002.png
deleted file mode 100644
index f735b94617843cc7c61500889cfadcf290f2616a..0000000000000000000000000000000000000000
Binary files a/textures/interior/interior_wall_002.png and /dev/null differ
diff --git a/textures/interior/interior_wall_003.png b/textures/interior/interior_wall_003.png
deleted file mode 100644
index 4a73a603d52dbe8aacb9a488675c77cab6f80019..0000000000000000000000000000000000000000
Binary files a/textures/interior/interior_wall_003.png and /dev/null differ
diff --git a/textures/interior/wall_01.ase b/textures/interior/wall_01.ase
new file mode 100644
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diff --git a/textures/interior/wall_01.png b/textures/interior/wall_01.png
new file mode 100644
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diff --git a/textures/interior/wall_02.ase b/textures/interior/wall_02.ase
new file mode 100644
index 0000000000000000000000000000000000000000..d56c6d4bd37bb02aa2ed143b11a1556911ce566f
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diff --git a/textures/interior/wall_02.png b/textures/interior/wall_02.png
new file mode 100644
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