Here's a game I originally made in 2013! It's called Flying Bill 2. (I can't find the original Flying Bill.) You use the arrow keys to make Bill move. Flying into the brown part of the orange wall to go inside the wall. (Kind of the gimmick of this game) Avoid the fire ball enemies and try an reach the green 'end' orb. It's a really basic game, but was good for me at the time.