Chessformer is a grid-based puzzle platformer with Chess pieces. The goal in each level is to capture the opposing king, who is lazy and never moves, so don't worry about losing any pieces.
Isotiles is an isometric puzzle game played on a grid. The goal of the game is to turn all of the blue tiles red and then reach the exit tile. There are 50 levels to play through with increasing difficulty and added obstacles.
Kombine is a minimalist puzzle game played on a grid. The goal is to remove all of the blocks that have borders by matching three or more of the same blocks together.
Puzzle Tactics is a turn-based and grid-based tactics game played in various small levels. You play as the blue team with the goal of defeating the red team's units before losing your own. Later levels are more difficult and introduce more unit types in battle.