Question 1

How many players can play Chain Reaction?

Accepted Answer

2 to 4 players can play Chain Reaction. Each player gets a unique color for their atoms on the grid.

Question 2

What happens when a cell explodes in Chain Reaction?

Accepted Answer

When a cell reaches its critical mass (2 for corners, 3 for edges, 4 for interior cells), it explodes and sends one atom to each neighboring cell, converting them to your color. This can trigger further explosions in a chain reaction!

Question 3

How do you win Chain Reaction?

Accepted Answer

You win by being the last player with atoms on the board. When your atoms are captured by another player's explosion, you're eliminated. Strategic placement is key!

Question 4

Is Chain Reaction free to play?

Accepted Answer

Yes, Chain Reaction is completely free to play. No account required — just create a room and share the code with friends.

Question 5

Do I need to download anything?

Accepted Answer

No! Chain Reaction runs entirely in your browser. Create a room, share the link, and start playing instantly on any device.