@xPassionx: actually the levels are a random pick of varying difficulty because i'm not into the AI development so much that i could write a heuristic backtrack that tells the difficulty of a level besides the minimal moves :\ about the level editor, i made one before the game, but thought no one would care making own levels, so thanks for the confirmation, i will definitely put it in and implement the sharedContent API in the following days :)
Thank you all for the feedbacks, your opinion is important to me and as a greenhorn on Kongregate i am learning much from them. (extra thx for the positive ones :D)
@harvester: fix in progress, i don't really know what it's problem is for i get the API and it also connects the player but it still throws null references (for the connect too) :\
@Zarigani: good observation, it didn't come to my mind at all but i'm heavily thinking on implementing it into a new version.
@Masta_Ali: ... thank you for your kindness.
@Gameaholic: this is on purpose, i looked into many Sokoban games that have an undo function and they are usually giving a penalty movecount rather than substracting one, because undo is somewhat a little cheat that wasn't part of the original concept.