Blokus by LaForce

The iPad implementation for the famous board game Blokus. Supports 2 players and 4 players. Originally programmed in 2017.

Rules:
Touch a block to select it, then drag to place it on board.
Each block should share a corner (but cannot share an edge) with an existing block of the same color, except for the first block, which should cover the dot of the same color. A block may not overlap with any other blocks.
When you cannot place any more blocks, tap "PASS".
Google "Blokus" for a more detailed introduction.