you are entering a world... a place not only of sight and of sound, but of mind..... you have entered... the twilight zone XD

Way to many colors here like everyone else has said. You should try to make some of the other pieces to this game as well.

Ok! I will try my best to polish this! And will folo your way of improving it~ THX

the wall pieces look odd because they are supposed to be at right-angles to the wall (like the ones on the floor stand upright).  your pieces are at "2D right angles" (drawn on a flat surface), whereas in iso, the illusion of a right angle is created by following the 2x1 pixel lines.  When you draw the wall pawns, try following the lines of the chessboard below them.

it's an imaginative idea so i really would urge you to polish this piece; it would look nice in the Joint

pretty neat. 4/5

39 colors!? I bet you can cut the color count a bit...

If that perspective aberration were on purpose, I would have said: "great idea". It's puzzling... Escher used a lot this type of "mistake" to make his point. I love the grays. 
It looks kinda unfinished... the 2 pieces on the right wall have shadows (or are they reflections????) and the rest don't have any. I would love for the character to be more in the style of the room...

Excellent idea anyway

You're welcome. ^_^

Yes, i get wat u mean~ thx for the comment..=D

The pieces on the walls look very odd, not because of the fact that they are on the wall, but because they don't seem to be pointing away from the wall they are on. They seem to be pointing towards the wall next to them, I hope you understand what I'm trying to say.
Also, where does the light come from? The shadows and light spots don't make much sense.
It's a great piece, the imaginative use of gray is visually stunning and big chess boards are just cool. Positioning chess pieces on the walls gives it an abstract feel.