Conversions:
- Advanced Dungeons & Dragons, 1st Edition — Dungeons & Dragons: Conversion Manual
- Advanced Dungeons & Dragons, 2nd Edition — Dungeons & Dragons: Conversion Manual
- Big Eyes, Small Mouth — BESM d20 Anime Role-Player’s Handbook
- Call of Cthulhu — d20 Call of Cthulhu
- Dungeon Crawl Classics — Content Conversion Guide
- FATE — d20 to FATE Conversion Guide
- Legend of the Five Rings — Legend of the Five Rings: Rokugan – Oriental Adventures
- Pathfinder — Content Conversion Guide
- Unisystem — All Flesh Must Be Eaten
