Controls: Use your mouse/finger to walk around, when you reach the right of the screen you will move to the next area. Being a semi ghost (read the lore below) you can phase through most materials but the only material that you may not cross is the void. Tap your character to jump.
Lore: You are a blue knight who died after fighting the evil red knights; somehow you sort of survived. While the other knights became ghosts, you are stuck in a kind of limbo. If you can get [insert name of macguffin here] then you can return to life.