You and the bot get 7 dominoes each. The rest go face down in the boneyard.
On your turn, play a domino with a number that matches one of the two open ends. Tap a domino and it goes where it fits. If it fits both ends, tap the glowing end you want.
Can't play? Draw from the boneyard until you can. If the boneyard is empty, you pass.
Empty your hand first and you win the round. You score the total pips left in the bot's hand.
If nobody can move, the round is blocked and the lighter hand wins.
First to 50 points takes the match. Easy bot plays whatever fits. Hard bot dumps heavy tiles and remembers which numbers you're missing.