Corex and related libaries (BINOS,APS). Designed for GBA and NDS console, but may port to another platform.
Drivers, firmware and cross dev tools for the Commodore 64 Retro Replay, RRNet and MMC64.
A compiler for creating games on MOS-65xx-based computers
Ursine Core is/was a simple RPG-type game development library/toolkit for the Atari Video Computer System (VCS) model 2600. (That's the 1977 Atari game console.) This library is intended to be portable to other MOS-65xx-based computers (6507, 6502, 6510, 2A03, 8502), and introducing support for other systems is ongoing (Commodore VIC-20, 64, 16/+4, 128; Apple ][; Nintendo Entertainment System) Ursine Core is a developer's suite hosted on a POSIX-like workstation. The Ursine Core provides: * converters for PNG graphics into tile, font, and sprite artwork for the various platforms * converters for MIDI and (soon) waveform audio into sound effects or music * string conversions and font support * tile-based "walk about" map mode ("overhead view") * "storybook" screens with bitmap graphics * simple text-driven menus * a custom language for writing scripts, that compiles into efficient machine code Note that this project is GPL, but games produced by it need no