diff --git a/game/sim/builtinLevels.py b/game/sim/builtinLevels.py
new file mode 100644
index 0000000..a37eacd
--- /dev/null
+++ b/game/sim/builtinLevels.py
@@ -0,0 +1,67 @@
+from .level import parseAscii, PlatformSpawn
+
+meadowMap = [
+    "                                                                ",
+    "          o o o o                                               ",
+    "                      = = =            o o o                    ",
+    "     f                                                          ",
+    "                                                    = =         ",
+    "        = =        o o o          G           v                 ",
+    "   o o                    = =                        o o o      ",
+    "  p     g      g     c    @   s        g        f         E     ",
+    "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
+    "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
+    "DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD",
+    "DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD",
+]
+
+cavernMap = [
+    "                                        ",
+    "              o o o                     ",
+    "        TTT          @        o o       ",
+    "        HHH      #####                  ",
+    "        HHH        X     ^ ^      k      ",
+    "   p    HHH    g   /X    S S  f       E  ",
+    "XXXXXXXXXXXXXXXX~~~~XXXXXXXXXXXXXXXXXXXXX",
+    "XXXXXXXXXXXXXXXX~~~~XXXXXXXXXXXXXXXXXXXXX",
+    "DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD",
+]
+
+skywayMap = [
+    "                                                    ",
+    "        o o o                     o o o             ",
+    "                 = = =                              ",
+    "    p                       G              @        ",
+    "  XXXXXX                              c        E    ",
+    "  XXXXXX          ^^^^^^          XXXXXXXXXXXXXX     ",
+    "  DDDDDD                          DDDDDDDDDDDDDD     ",
+    "                                                    ",
+]
+
+
+def buildMeadow():
+    level = parseAscii("meadow", meadowMap)
+    return level
+
+
+def buildCavern():
+    level = parseAscii("cavern", cavernMap)
+    return level
+
+
+def buildSkyway():
+    level = parseAscii("skyway", skywayMap)
+    level.platforms.append(PlatformSpawn(9 * 16, 5 * 16, 48, 12, 26 * 16, 5 * 16, 1.1))
+    level.platforms.append(PlatformSpawn(20 * 16, 3 * 16, 32, 12, 20 * 16, 1 * 16, 0.9))
+    return level
+
+
+def buildAll():
+    return [buildMeadow(), buildCavern(), buildSkyway()]
+
+
+levelBuilders = {
+    "meadow": buildMeadow,
+    "cavern": buildCavern,
+    "skyway": buildSkyway,
+}