itsyourturn.com (thing)

A thing I like about ItsYourTurn.com is that they have some really rare variants of games, some of which they invented themselves.  The full list of games available for play on the site is below.  The basic games are boldfaced, with the variations below.  I'm going to attempt to node all the variants within the next few days.:
 
 

• Backgammon
• Pro Backgammon
• Backgammon Race
• Anti-Backgammon

• Battleboats (more commonly known as Battleship)
• Battleboats Plus

• Checkers (American Checkers, also known as British Draughts)
• Pro Checkers
• Anti-Checkers
• Crowded Checkers
• Sparse Checkers

• International Checkers (also known as International Draughts)
• Italian Checkers
• Polish Checkers
• Russian Checkers

• Chess
• King's Corner Chess
• Kings's Fortress Chess
• Horde Chess
• Extinction Chess
• Anti Chess
• Dark Chess
• Screen Chess
• Crazy Screen Chess

• Chinese Chess (also known as Xiangqi)

• Go

• Gomoku
• Pro Go-Moku
• Pente
• Keryo-Pente
• Pro Pente

• Halma (similar to Chinese Checkers)
• Halma 10x10

• Reversi (also known as Othello)
• Reversi 10x10
• Blackhole Reversi
• Blackhole Reversi 10x10
• Anti-Reversi
• Anti-Reversi 10x10

• Sabotage (similar to Stratego)
• Mini Sabotage
• Sabotage Rush

• Stack4 (also known as Connect Four)
• Stack 4x4
• Anti-Stack4
• Connectris