The Legend of Edgar

I just noticed that I have completely missed to mention the nice metroidvania-like platformer The Legend of Edgar here! This exploration-focused 2D platformer with huge persistent levels, boss battles, several weapons to wield, etc. is really well made and also has the benefit of being complete, with story and all! Also you can play with a gamepad, which I always find is a big plus.

Edgar with sword in hand on his epic quest.