Sovereign Chess is a chess variant that is playable with 2-4 players. A Mensa Mind Games contender, this game is masterfully crafted and balanced. All conventional chess rules apply, but if you control a colored square, you control that color as well! Change the color of your king through a Coup d'Etat, Overthrow, or Defection. Castle across the board, check your opponent by grabbing control of a color, and capture a piece seemingly going backwards (captures happen toward the 4 center lines as the board has 4 directions instead of two!)
I prefer the 2-player variant and my brother prefers it with 4. When I first played this game, I immediately gave the creator, Mark Bates, a call and told him we had to get this game in the stores. If you like chess, you will love Sovereign Chess.