Chellmetra

Trapped in world of rooms, try your best to get out of it, use your knowledge (sometimes google knowledge also :) ) to solve to puzzle, think and search wherever you can reach to open the right door, but be careful of choosing the wrong door, choosing the wrong door will cost you to return to the first door in the stage.

Since each stage has five levels Ascending sequentially in degree of difficulty, each stage talk about different topic, and you should have a varied knowledge to pass the stages, finish the game as fast as you can and show us your skills.