Topple

Topple is a chain reaction puzzle game. Each board is packed with dominoes and marbles, set up so a single tap can knock the whole thing over. The catch is that only one piece starts the full chain, and it's up to you to find it.

Choose the right piece and the whole board comes down. Choose the wrong one and the chain stops short, so you'll need to rethink and try again.

HOW IT WORKS
Study the board, trace where everything would fall, then tap the piece you think starts it all. Dominoes knock into each other, marbles roll until they hit something, and the chain keeps going from there. Get every piece down and the level's cleared.

A THINKING GAME, NOT A REFLEX ONE
You might spend a few minutes working out a board and then solve it with one tap. Get it right first time and you'll earn three stars.

NEW MECHANICS AS YOU GO
The further you get, the more Topple adds to the mix. New pieces and new rules come in along the way, each one changing how you read the board and making you rethink what you thought you knew.

HINTS THAT DON'T SPOIL IT
If you're stuck, a hint greys out pieces that can't be the answer. It won't tell you which piece it is, so the final step is still yours to work out.

ONE ANSWER EVERY TIME
Every level has been checked to make sure exactly one piece works. No lucky guesses and no boards where several taps somehow all win.

PLAY AT YOUR OWN PACE
There's no clock and no lives, so take as long as you need. It plays fully offline and saves your progress automatically, so you can close it whenever you like and pick up on the same level later.

Uncluttered boards, satisfying sound effects as pieces knock together, and light or dark mode (or let it match your phone).

If you enjoy domino puzzles, brain teasers, or logic games where everything suddenly clicks after a good long look, Topple is worth a try.