Games Invented by Gary K. Gifford on Zillions of Games
Cannons of Chesstonia 
. Cannons launch a Pawn, Wazir, Ferz and Stone to increase strategical and tactical play. Author: Antoine Fourrière. Inventor: Gary K. Gifford.
- Catapults of Troy . Large variant with a river, catapults, archers, and trojan horses! Author: Antoine Fourrière. Inventor: Gary K. Gifford.
- Medusa Shogi
. Missing description Author: Larry L. Smith. Inventor: Gary K. Gifford.
- Odin's Rune Chess . Missing description Author: Michael Nelson. Inventor: Gary K. Gifford.
- Pillars of Medusa . Download Pillars of Medusa for Zillions of Games! Author: Jason Jakupca. Inventor: Gary K. Gifford.
- Queens or Castles. Wizards promote by making an opponent's piece [or pawn] and themself vanish from the board. Author: Larry L. Smith. Inventor: Gary K. Gifford.
- Shanghai Palace Chess . Download these files to play this blend of Chinese, Japanese and Western Chess with Zillions of Games. Author: Larry L. Smith. Inventor: Gary K. Gifford.
- Shatranj of Troy. A Shatranj variant with Shogi-like drops, a Trojan Horse (with 6 pieces inside). Author: Larry L. Smith. Inventor: Gary K. Gifford.