Tilora - 2048

Tilora is the number-merging puzzle, with room to grow.

Swipe in any direction and every tile slides that way. When two tiles with the same number meet, they merge into one worth double. Keep merging until you reach the target tile — and keep going after that if the board still has room.

• Three boards — 4×4 (reach 2048), 5×5 (reach 4096) and 6×6 (reach 8192)
• Best score kept separately for each board size
• Leave a game mid-run and come back to it later
• A built-in tutorial shows how tiles slide and merge
• Works fully offline

Simple to pick up, and it keeps getting harder in a way that's entirely your own fault.