Blockwave: Merge Number Puzzle

Drag numbered blocks onto the board. When equal numbers touch, they merge and
climb: 2, 4, 8, 16, and up. Reach the goal number and that tile explodes,
clearing space around it, doubling the goal, and dropping you into the next
world.

That's the whole game. No timer, no lives, nothing to wait for. It plays with
one thumb.

A few things make it different from other merge games:

The ring. Every piece has a ring on one of its squares, and merges land where
the ring is. Tap a piece to move the ring, drag to place it. Where you put the
ring decides where the big number ends up, and that's the difference between a
board that flows and a board that jams.

The preview. Before you drop a piece you see exactly which tiles it will take
and what number you'll get. No guesswork.

The worlds. There are fifteen, and every explosion carries you to another one,
in an order that shuffles each run. They aren't recolours. Molten iron, a neon
sign at night, the bottom of the ocean, a cherry tree in daylight — each one
looks, sounds, and moves like its own place.

There's also a level route if you want goals: some are relaxed score chases
with no move limit, some are demolition puzzles that will take you a few
tries. Three stars each.

Free to play, suitable for all ages.