So I finally got back into Odyssey2 programming again.
This game is like Mario Bros. It's called "Pipe Down". It only has two enemies, and the fireball is always on. But I did try to add some interesting things. Like if you don't kick the enemy within a certain limit, it gets back up and starts walking again (which is in Mario Bros.) Unfortunately I don't have room for much else (like coins or other enemies). The last version I tested works great on a real Odyssey 2, though, so that's good. I especially like the fireball is multicolored. This was done by putting the period character in the center of the fourth and final sprite. I may change the guy's sprite, though. His head loos really weird.