E02 is a versatile, multiplatform 2D game development system. Its editors and powerful script interface allow users to create the characters and environment that make up the game, while the program handles I/O, low-level player/object management, etc. Many 2D Genre are possible with this system, such as Platform, Adventure, SHMUP, Fighter, RPG, Paddleball/Pinball, and others.

Release notes:

The E02 multiplatform 2D Game Engine has been in development for some time now, and is now available for the Wiz

Two game demos are currently available:
Megaman: Triple Threat – http://stealth.hapisan.com/MMTT
Sonic the Hedgehog: Project Mettrix – http://stealth.hapisan.com/Mettrix