GAME FOR TWO PLAYERS · ONLINE · FREE

Free online game for two players in your browser

Reactor Zero is a cooperative browser game you can play as two: pick your heroes and a bot fills the third spot on the team. Together you defend the core against waves of enemies, all the way to the boss fight. No install and no fees.

Why play it as two

You play together, not against each other

It is co-op: a shared goal, roles that complement each other and a shared boss at the end of the round.

A bot fills the team

The game is designed for three, so with two players a bot takes the empty slot.

No install

Both players join through the browser, on a computer or on a phone. The game is free.

Easy start

One person creates a room and sends the other the code. The whole online session takes a few minutes.

HOW IT WORKS

How to play as two

01

Create accounts

Each of you creates an account with a nickname and a password, with no e-mail address.

02

Create a room with a code

One person creates a private room and sends the code to the other. You can also choose "Quick game".

03

Pick heroes and defend the core

Choose roles, for example a guard and a medic, and defend the core together with the bot.

Frequently asked questions

Can two people play Reactor Zero?

Yes. You can play as two and a bot fills the third slot. A team can have up to three people.

Is it against each other or together?

Together. It is a cooperative PvE game in which both players defend the same core against enemies.

Do I need to install anything?

No. It is a browser game, just open the page on a computer, tablet or phone.

Is the game free?

Yes. The open beta has no payments and no ads.

Is there chat in the game?

There is no open chat with strangers. You talk outside the game, for example through a messenger.

SEE ALSO

PLAY AS TWO

Create a room, send the code and see how long you can defend the core.

PLAY FOR FREE