Chain Reaction Lab

Contains adsIn-app purchases
Content rating
Everyone
10+
Downloads
Content rating
Everyone
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About this game

Place colored pieces on the board. When five of the same color touch each other, they explode.

And here's the trick: when they explode, the blast repaints everything it touches with its color. These newly painted squares can form another group of five, which then explodes, which in turn repaints again… A single well-placed piece can take out half the board.

▸ 60 PUZZLES
Each one presents a specific problem: this board, these pieces, clear it. The pieces aren't randomly selected; they're predetermined, so you never lose due to bad luck. The first six puzzles teach you the rules; from then on, you have to think three or four moves ahead.

▸ EVERY PUZZLE HAS A SOLUTION, AND IT'S BEEN TESTED
There are no impossible levels included by mistake. A search engine checks all the game lines in the 60 puzzles and verifies that they can be completed with the pieces provided.

▸ THREE REAL STARS
The stars don't measure whether you finish, they measure whether you did the best the board allows. The third star is hard to find the longest chain.

▸ UNDOABLE
An explosion can repaint the last trace of a color you can no longer clear. When that happens, the game tells you immediately and lets you undo the move, instead of wasting your time on a dead game.

▸ PLAY AGAINST THE BOT
Fourteen turns, same board, same rules. Each explosion adds the number of squares you clear and steals a color from your opponent. It's not a disguised tutorial: it loses a lot.

▸ UNCOMPLICATED
Play offline. No lives to wait for and no coins: the 60 puzzles are there from day one. It has ads, and if they bother you, you can remove them with a one-time payment.
Five of the same color detonate. 60 chain puzzles and a bot to beat.
Updated on
Aug 14, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
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What’s new

Chain Reaction Lab es ahora un juego distinto. El tablero de átomos ya no está; en su lugar hay piezas de colores y 60 puzzles.

La regla: cinco del mismo color pegadas detonan, y el estallido repinta lo que toca, así que encadenan.

· 60 niveles, todos con solución comprobada
· Deshacer, y aviso cuando una jugada deja el nivel imposible
· Pistas cuando un nivel se te resiste
· Estrellas según la mejor cadena de cada tablero
· Partida contra el bot
· Compatible con Android 16