8-Bit Night predecessor now on Desura for FREE! Alter Ego is a clever retro styled single screen puzzle platformer with an interesting swapping mechanic. You control a blueish little guy and his phantom alter ego (that moves in a mirrored fashion) at the same time. Swap places with the invincible alter ego to reach normally unreachable corners and collect all the pixels to solve each stage. The game is freely available for PC, NES,MSX and ZX Spectrum.
I'm about half-way through and, so far, I like it.
It's a clever concept, the puzzles are well thought out, the art style is coherent and has character and, though the music doesn't grip me the way some chiptunes do, it's OK.
I only see two things that would make it better:
1. Even if only for grins and giggles, I'd like to play a mode where you get unlimited swaps, making it less puzzle and more platformer. (Imagine if Lode Runner only let you drill a limited number of holes for the mad monks to fall into)
2. A level editor. (Obviously, only for the platforms which support it. I can imagine a level editor which generates a new NES ROM, but I'd never expect to see it... except maybe as a dare or a personal challenge.)