diff --git a/rogueviz/nilrider/levels.cpp b/rogueviz/nilrider/levels.cpp
index 32d45b73..df18661d 100644
--- a/rogueviz/nilrider/levels.cpp
+++ b/rogueviz/nilrider/levels.cpp
@@ -380,24 +380,23 @@ level rotplane(
   "Your unicycle is powered only by the gravity. Use that to your advantage!"
   ,
 
-  -7.5*dft_block, 7.5*dft_block, 8.5*dft_block, -8.5*dft_block,
+  -7.5*dft_block, 7.5*dft_block, 7.5*dft_block, -7.5*dft_block,
   {
-  "ggggggggggggggg!",
-  "ggggggfffgggggg!",
-  "ggggggfffgggggg!",
-  "gggg|ggggg|gggg!",
-  "ggg-*-----*-ggg!",
-  "gggg|ggggf|gggg!",
-  "ggGg|g+ggg|grgG!",
-  "gGgg|g|xgo|gggg!",
-  "ggGg|g|ggg|grgg!",
-  "gggg|g|ggg|gggg!",
-  "gg--*-+---*--gg!",
-  "gggg|ggggg|gggg!",
-  "gggggggGGgggggg!",
-  "ggggggggggggggg!",
-  "ggggggggggggggg!",
-  "!!!!!!!!!!!!!!!!"
+  "ggggggggggggggg",
+  "ggggggfffgggggg",
+  "ggggggfffgggggg",
+  "gggg|ggggg|gggg",
+  "ggg-*-----*-ggg",
+  "gggg|ggggf|gggg",
+  "ggGg|g+ggg|grgG",
+  "gGgg|g|xgo|gggg",
+  "ggGg|g|ggg|grgg",
+  "gggg|g|ggg|gggg",
+  "gg--*-+---*--gg",
+  "gggg|ggggg|gggg",
+  "gggggggGGgggggg",
+  "ggggggggggggggg",
+  "ggggggggggggggg"
   },
   6, 6, {},
   rot_plane,
@@ -487,24 +486,23 @@ level geodesical4(
 level heisenberg0(
   "Heisenberg Zero", 'z', 0,
   "This is the plane z=0 in the Heisenberg group model of Nil. The roads are x=0, y=0 axes.",  
-  -7.5*dft_block, 7.5*dft_block, 8.5*dft_block, -8.5*dft_block,
+  -7.5*dft_block, 7.5*dft_block, 7.5*dft_block, -7.5*dft_block,
   {
-  "ggggggg|ggggggg!",
-  "grggggg|gggggrg!",
-  "gg*gggg|gggg*gg!",
-  "gggffgg|ggggggg!",
-  "gggffgg|ggfrggg!",
-  "ggggggg|gggggGg!",
-  "ggggggg|ggggggg!",
-  "-------+-------!",
-  "ggggggg|ggggggg!",
-  "gggGgog|ggggggg!",
-  "ggggggg|ggrgrgg!",
-  "gggGgGg|ggggggg!",
-  "gg*gggg|gggg*gg!",
-  "grggggg|gggggrg!",
-  "ggggggg|ggggggg!",
-  "!!!!!!!!!!!!!!!!"
+  "ggggggg|ggggggg",
+  "grggggg|gggggrg",
+  "gg*gggg|gggg*gg",
+  "gggffgg|ggggggg",
+  "gggffgg|ggfrggg",
+  "ggggggg|gggggGg",
+  "ggggggg|ggggggg",
+  "-------+-------",
+  "ggggggg|ggggggg",
+  "gggGgog|ggggggg",
+  "ggggggg|ggrgrgg",
+  "gggGgGg|ggggggg",
+  "gg*gggg|gggg*gg",
+  "grggggg|gggggrg",
+  "ggggggg|ggggggg"
   },
   8, 8, {},
   f_heisenberg0,
@@ -521,24 +519,23 @@ level rotwell(
   "look below!\n\n"
   "Note: you can move the camera freely (using the arrow keys and PageUp/Down/Home/End) while the game is paused."
   ,
-  -7.5*dft_block, 7.5*dft_block, 8.5*dft_block, -8.5*dft_block,
+  -7.5*dft_block, 7.5*dft_block, 7.5*dft_block, -7.5*dft_block,
   {
-  "ggggggggggggggg!",
-  "gogggggggggggog!",
-  "ggggg--*--ggggg!",
-  "gggg*ggggg*gggg!",
-  "ggg*ggGfGgg*ggg!",
-  "gg|ggfgggfgg|gg!",
-  "gg|gGgggggGg|gg!",
-  "gg*gfggxggfg*gg!",
-  "gg|gGgggggGg|gg!",
-  "gg|ggfgggfgg|gg!",
-  "ggg*ggGfGgg*ggg!",
-  "gggg*ggggg*gggg!",
-  "ggggg--*--ggggg!",
-  "gogggggggggggog!",
-  "ggggggggggggggg!",
-  "!!!!!!!!!!!!!!!!"
+  "ggggggggggggggg",
+  "gogggggggggggog",
+  "ggggg--*--ggggg",
+  "gggg*ggggg*gggg",
+  "ggg*ggGfGgg*ggg",
+  "gg|ggfgggfgg|gg",
+  "gg|gGgggggGg|gg",
+  "gg*gfggxggfg*gg",
+  "gg|gGgggggGg|gg",
+  "gg|ggfgggfgg|gg",
+  "ggg*ggGfGgg*ggg",
+  "gggg*ggggg*gggg",
+  "ggggg--*--ggggg",
+  "gogggggggggggog",
+  "ggggggggggggggg"
   },
   8, 8, {},
   f_rot_well,
@@ -552,24 +549,23 @@ level labyrinth(
   "Labyrinth", 'l', 0,
   "You will have to go clockwise this time!\n\n"
   "The squares of this level have half of their usual length.",
-  -7.5*dft_block/2, 7.5*dft_block/2, 8.5*dft_block/2, -8.5*dft_block/2,
+  -7.5*dft_block/2, 7.5*dft_block/2, 7.5*dft_block/2, -7.5*dft_block/2,
   {
-  "ogggrfffffffffo!",
-  "g*ggrgggggggggg!",
-  "ggggrgggggggggg!",
-  "ggggrgggggggggg!",
-  "ggggrgggrrggggg!",
-  "ggggrgGGGrrgggg!",
-  "ggggrGgggGrgggg!",
-  "ggggrGgxgGrgggg!",
-  "ggggrGgggGrgggg!",
-  "ggggrrGGGrrgggg!",
-  "gggggrrrrrggggg!",
-  "ggggggggggggggg!",
-  "ggggggggggggggg!",
-  "ggggggggggggggg!",
-  "offfffffffffffo!",
-  "!!!!!!!!!!!!!!!!"
+  "ogggrfffffffffo",
+  "g*ggrgggggggggg",
+  "ggggrgggggggggg",
+  "ggggrgggggggggg",
+  "ggggrgggrrggggg",
+  "ggggrgGGGrrgggg",
+  "ggggrGgggGrgggg",
+  "ggggrGgxgGrgggg",
+  "ggggrGgggGrgggg",
+  "ggggrrGGGrrgggg",
+  "gggggrrrrrggggg",
+  "ggggggggggggggg",
+  "ggggggggggggggg",
+  "ggggggggggggggg",
+  "offfffffffffffo",
   },
   8, 8, {},
   rot_plane,
@@ -585,16 +581,13 @@ level labyrinth(
 level obstacle(
   "Obstacle Course", 'o', 0,
   "The main street is horizontal, as well as the lines orthogonal to it.",
-  0*dft_block, 2.5*dft_block, 64*dft_block, -5.5*dft_block,
+  0*dft_block, 2.5*dft_block, 64*dft_block, -2.5*dft_block,
   {
   "ggggggGrggGrgggggggggggggggggggggGrxgggggggggGrggggggggGrggggggo",
   "ggggggGrggGrgggGrgggggGrgggggggggGrgggggggggggggGrgggggGrggggggo",
   "-----------r----r------r----r-----r--r---------r---------------*",
   "ggggggGrgggggggGrgggggGrggggggggggggGrggggggGrgggggggggGrggggggo",
-  "ggggggGrgggggggGrgggggggggggggggggggGrgggggggggGrggggggGrggggggo",
-  "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",
-  "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",
-  "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",
+  "ggggggGrgggggggGrgggggggggggggggggggGrgggggggggGrggggggGrggggggo"
   },
   0, 4, {},
   long_x,
@@ -873,16 +866,13 @@ level cycloid_slalom(
   "The main street is a brachistochrone. If you were not moving north/south, "
   "it would be the fastest path to get to the goal. Is it still the case "
   "in these physics? Definitely not if you have to collect on the way!",
-  -0.5*dft_block, 2.5*dft_block, 63.5*dft_block, -5.5*dft_block,
+  -0.5*dft_block, 2.5*dft_block, 63.5*dft_block, -2.5*dft_block,
   {
   "gggggggG*GggggrgggggG*GgggggrggggggG*GgggggrggggG*Rgggggrggggggo",
   "gggggggGGGggggggggggGGGggggggggggggGGGggggggggggGGGggggggggggggo",
   "---------------------------------------------------------------*",
   "gggggggggggggGGGgggggggggggGGGggggggggggggGGGggggggggggGGGgggggo",
-  "ggggggggrggggG*GgggggrgggggG*GggggggrgggggG*GggggrgggggG*Ggggggo",
-  "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",
-  "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",
-  "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",
+  "ggggggggrggggG*GgggggrgggggG*GggggggrgggggG*GggggrgggggG*Ggggggo"
   },
   0, 2, {},
   brachistochrone,
@@ -897,12 +887,11 @@ level multifloor(
   "There are triangles on the floors below. I mean, DIRECTLY below.\n\nHopefully, you can abuse how straight lines work in this geometry to reach them!"
   ,
 
-  -1.5*dft_block, 1.5*dft_block, 2.5*dft_block, -2.5*dft_block,
+  -1.5*dft_block, 1.5*dft_block, 1.5*dft_block, -1.5*dft_block,
   {
-  "ggg!",
-  "ggg!",
-  "ggg!",
-  "!!!!"},
+  "ggg",
+  "ggg",
+  "ggg"},
   0, 1, {},
   rot_plane,
   {