Straight to the point: Mini 512 is a 3×3 board where the target tile is 512, playable in your browser right now. It is tuned for quick runs, honest difficulty, and controls that make sense the first time you touch them.
Swipes move every tile at once, so each move commits you - there is no undo and no taking back a careless push. Equal tiles merge and double, and the score climbs with every merge. Reaching 512 ends the round in victory, but the grid only has so much room.
The loop is deliberately compact: one round takes minutes, improvement is visible, and the next run is one tap away. That makes it a reliable filler for short breaks - and an easy game to recommend to someone who 'does not really play games'.
Merge equal tiles on a 3x3 grid and reach 512.
There are 0 close relatives of Mini 512 in the catalogue, which is unusual here. Comparing it with the rest of the Teka Shelf takes about a minute and tells you more than any description.
Mechanically it stays close to its tag set — numbers, merge, logic — and does not add a second system on top, which is why it survives repeated play better than it looks like it will.
Keep it if you play in short bursts. It rewards a second attempt far more than a first, and the second attempt costs nothing but the tap.