The Official Hamster Republic Role Playing Game Creation Engine, abbreviated as OHRRPGCE or OHR, is an open-source, "All-in-one" game creation system. It was designed to allow the quick creation of 2D role-playing video games. It was originally written by James Paige in QuickBASIC and released in 1997, and a community of hobbyist game developers have created thousands of amateur games since that time.