Tier Up

1. Swipe or press a direction and every card on the board slides that way until it hits a wall or another card.
2. Two of the same tier merge when they meet — two Commons become an Elite, two Elites a 2WP B, and so on up the ladder.
3. A new Common appears in a free square after every move that shifts something. A move that changes nothing doesn't deal one.
4. Your score is what you merge, not what's on the board — the bigger the card you make, the more it pays.
5. The board jams when it's full and no two neighbours match. That's the run over.

Keep your biggest card wedged in a corner and work along one edge. Merging toward the middle is how boards fill up and jam.