Sengoku Domino

In Sengoku Domino (戦国ドミノ), you want to dominate two regions of the battlefield to win. Each region of the battlefield is resolved in turn, so you must fight in them one at a time by placing domino tiles that represent your army's strength.

At the start of the game, each player shuffles their colored domino army tiles face down, then draws a hand of five tiles, keeping them behind their screen. On a turn, each player reveals one domino, with the strength of a domino equalling the summed numbers on it. Whoever played the weakest domino places it into the region first, then the player of the next weakest domino places that, etc. In the case of a tie, the tied dominos are placed after all other dominoes that turn.

The region under question is a 5x5 space on the playing area, with the central square being occupied by a castle. No domino can be placed over the castle. The first domino placed in a region must be placed adjacent to a castle, and each subsequent domino placed can be placed adjacent to the castle or next to any other domino as long as they have the same number in at least one adjacent edge. For example, a 2|5 tile could be placed next to a 4|5 tile, or the tiles could be placed perpendicular to one another as long as the 5s are adjacent.

Once all the dominoes are placed, the next turn begins with players refilling their hands, then playing another domino. A player cannot play outside the 5x5 area unless it's impossible to play all of the domino inside it.

Once the region is filled, you consider the total strength of each player in each row and column in the region, using colored markers to indicate who has the highest total. If two colors are tied for highest, then they're ignored and the next highest color wins the row or column. If the totals are completely tied, then no one wins that row or column. Whoever wins the most rows and columns wins the region, placing a marker of their color on the castle. Again, in the case of a tie, they're ignored and the next highest color wins the region!

Whoever first wins two regions wins the game. If in a four-player game each player wins one region, then the tie is broken by whoever won the most rows and columns.