diff --git a/README.md b/README.md
index 007258c..a75e4ff 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,8 @@ Limitation: the player must cheat
 - [X] stage 1
 - [X] stage ending
 - [X] win state
-- [ ] update itch page
-- [ ] other cheats?
+- [X] update itch page
+- [X] other cheats?
 - [ ] explicit goal?
 - [X] bug: respawn killed enemies
 - [ ] bug: bullets collide with bg?
diff --git a/chi-tor.wren b/chi-tor.wren
index 4ded6ca..2ec72ba 100644
--- a/chi-tor.wren
+++ b/chi-tor.wren
@@ -56,6 +56,9 @@ class Cheat {
 
 	static doublePoints { __double_points }
 	static doublePoints=(b) { __double_points = b }
+
+	static noCollision { __no_collision }
+	static noCollision=(b) { __no_collision = b }
 }
 
 class Star {
@@ -419,7 +422,7 @@ class World {
 			}
 		}
 
-		if (_player.alive) {
+		if (_player.alive && !Cheat.noCollision) {
 			var bx = _player.x - _player.bw / 2
 			var by = _player.y - _player.bh / 2
 			if (!(fgCheck(bx,            by) &&
@@ -602,8 +605,19 @@ class Game is TIC{
 					Cheat.enabled = true
 				}
 			} else {
+				if (TIC.btnp(D.up)) {
+					_c_index = (_c_index-1).clamp(0, 1)
+				}
+				if (TIC.btnp(D.down)) {
+					_c_index = (_c_index+1).clamp(0, 1)
+				}
 				if (TIC.btnp(4)) {
-					Cheat.doublePoints = !Cheat.doublePoints
+					if (_c_index == 0) {
+						Cheat.doublePoints = !Cheat.doublePoints
+					}
+					if (_c_index == 1) {
+						Cheat.noCollision = !Cheat.noCollision
+					}
 				}
 			}
 		}
@@ -666,14 +680,25 @@ class Game is TIC{
 					TIC.spr(sprId, 5 + pos * 10, H - 20, 0, 1, 0, rot)
 				}
 			} else {
-				var h = H/4 + 20
-				TIC.spr(116, 50, h - 1, 0)
+				var h = H/4 + 30
+
+				TIC.spr(116, 50, (h + _c_index * 16) - 1, 0)
+
 				TIC.print("double points:", 60, h, Color.white)
 				if (Cheat.doublePoints) {
 					TIC.print("ON", 140, h, Color.green)
 				} else {
 					TIC.print("OFF", 140, h, Color.red)
 				}
+
+				h = h + 16
+				TIC.print("no collision:", 60, h, Color.white)
+				if (Cheat.noCollision) {
+					TIC.print("ON", 140, h, Color.green)
+				} else {
+					TIC.print("OFF", 140, h, Color.red)
+				}
+
 				TIC.print("debug mode: enabled", 60, H - 10, Color.white)
 			}
 		}