Rummikub

• Make runs of three or more consecutive numbers in one colour, or groups of three or four equal numbers in different colours. A 1 comes before 2, never after 13.
• Your first play must total at least 30 points, using only your rack. A joker takes the value of the tile it represents.
• On later turns, add to or rearrange any sets. Play at least one of your own tiles; leave every table tile in a valid set. Reuse a freed joker on the same turn.
• Drawing one tile ends your turn. Empty your rack to win. Leftover tiles count against the loser, with jokers worth 30.
• With an empty pool, two consecutive passes end the game. The lower rack total wins the difference.

Based on the Classic rules, with untimed turns and free undo. Play one game at a time against a practical computer opponent. Independent implementation; no official affiliation.