Games Invented by Roberto Gravino programmed as Java scripts
- Circe Progressive Chess. Progressive variant where captured pieces return to their original square. Author: Ed Friedlander. Inventor: Roberto Gravino.
- Circe Progressive Chess. The usual way in which Circe chess is played today. Author: Ed Friedlander. Inventor: Roberto Gravino.
- Circe Vulcanici. Progressive Circe chess, units returning as in the non-progressive game, waiting if needed until the square becomes available. Author: Ed Friedlander. Inventor: Roberto Gravino.