One of the best ever

Theseus and the Maze is set in a big labyrinth (really, it's huge!), and your task is to assist the protagonist bunny in finding his way out of it.
This is a really good game. In fact, it is (in my opinion) one of the best platformers out there and THE best free online game ever. What I really like about Theseus is the combination of a high difficulty level with an enormously well-designed map. The gameplay is kind of Metroidish: you'll receive power-ups along the way which will take you to places you've seen earlier in the game but not been able to reach until now. The player never faces the same challenge two times, and every new obstacle is as fun as challenging to get past. This is simply an aMAZEing game if you're up to the challenge. Play it!