OHRRPGCE
From Just Solve the File Format Problem
OHRRPGCE (Official Hamster Republic Role Playing Game Creation Engine) is a RPG game creation system written in BASIC. At first it was a DOS program, but now it is available for many systems except DOS and is now free open source software.
The .RPG file, which is the file containing the game, is a Hamster archive file. The lumps whose names end with .reld are RELOAD files.