Stick Ninja Mission

A 2D platformer with a stick figure ninja, a mouse for attacking and a double jump for everything else. Stick Ninja Mission builds every level around the same loop: get past the traps, deal with the monsters standing where you need to be, find the key, open the door. The split between keyboard movement and mouse attacks is what gives it its character — you aim a strike at something while still moving, which is harder and more satisfying than a single attack button would be. Later levels hide the route rather than the key.