VERGE, and it' subsequent release VERGE 2.0, are engines for the creation of 8-bit and up 2d-games.

VERGE was created to make RPGs of the console game variety, examples including: Final Fantasy, Lunar, and Phantasy Star amongst others. It has since expanded into being a stable platform to develop quickly any type of 2d game you could've played on a SNES or Genesis, Like Platform Games (ie. Super Mario Bros.), or puzzle games (i. e. tetris) etc...