Heureka / ヘウレーカ!ヘウレーカ is a tile-placement puzzle game based around the powers of 2.
Players take turns placing tiles by matching the symbols on the four corners of the tiles. Each time a tile is placed, tokens are placed on the newly placed tile and adjacent tiles. Tiles occupied by a player's tokens become their territory.
In the end, player with the highest total score from their occupied tiles wins.