• Loading variant configuration
• Validation
• Graphical user interface
• Variant configuration collection
• Crowded Xiangqi
• Dragonfly chess
• Kamikaze Rooks
• Racing Chess
• Double Army
• Capture Chess
• Goro Goro Plus
• Mounted
• Checkmateless Chess
• Massacre Chess
• Sixth Rank Chess
• Crossing
• Two Kings 2
• Capture All
• 6x6 Breakthrough
• 7x7 Breakthrough
• Backrank
• Chess vs Hoppel Poppel
• Misere Chess
• Stardust
• Mini HexChess