The in-universe description of RetroWar:
Retro War is a compilation of the best multiplayer games faithfully ported, pixel by pixel, from two of the most popular 8-bit home computers that never existed: The Commodore 256 and the VIC-30.
UniBlaster is the engine that powers most of the games in the first release of RetroWar. Some videos of early development versions:
The main focus of the second release would be to create a meta-game that ties together the mini-games, in the way that Mario Party or WarioWare does.