Alright, so, VVVVVV. I think the main character should be in SMBC. Basically, he can flip gravity. And... That's it. So, that's what he would do in SMBC. Powerups? No need, he can't hit blocks. How do we keep him from just skipping the whole level? Add a tripwire to the top of the sky. If he touches it, it flips him back to the bottom. He can't kill enemies. In cave levels, an extra tripwire should be added over the entrance, so he still can't skip the whole thing. For that bit at the beginning of 1-2, since he can't duck or break blocks, we should make him able to squeeze through 1-block passages. Thoughts?