Triploot

Description
Triploot is a puzzle game where treasure chests combine to form better treasure chests, with the goal of making the ultimate treasure chest.
The player can place basic treasure chests next to each other, which will combine to form the next treasure chest up when at least three chests are adjacent to each other in any direction. (As opposed to three-in-a-row.) But there is only so much room on the board. Once there are no more options for placing chests, the game is over. A power-up may appear: a diamond that will change a chest's type to create matches.
Triploot is score-based and has a leaderboard.