OPEN BETA · PvE IN TEAMS OF 3 PLAYERS

GATHER A TEAM.DEFEND THE CORE.

Co-op PvE in your browser. Gather a team, pick your heroes and defend the core against the enemy together.

Play without an account ↗Play with friends →

No account · no installation · a match takes about 3 minutes

No ads during the beta

Background: promotional illustration

Gather a team

Invite friends. It is easier to defend the core with three.

Defend the core together

Pick your roles and fight off the enemies.

Discover rewards

Five chest levels available in the game.

Real Reactor Zero gameplay: the core, defenders and enemies seen from above — REAL BETA SCREENSHOT A wave of enemies · Click to enlarge

ACTUAL GAMEPLAY

Small team.
Big responsibility.

One core. Enemies from every direction. Combine your abilities, choose upgrades and survive until the boss arrives.

Try a quick round ↗

TOGETHER AGAINST THE ENEMY

INVITE FRIENDS.
DEFEND THE CORE.

You do not have to fight alone. In co-op PvE every character brings different abilities: combine them in a team of three. Quick game finds a free room, and after the match you see the score of the whole team and a leaderboard. Invite friends with your referral link and claim a bonus when they play.

Play now

Without an account you can play solo with bots. An account is needed for multiplayer and for saving your progress on the server.

ONECORE

Bastion

Viper

Pulse

TEAM OF 3 × SHARED GOAL

CHOOSE YOUR ROLE

YOUR HERO. YOUR STYLE.

Five characters to choose from. A team has three players, so pick ones that complement each other.

Zero

HACKER

An EMP pulse in all directions.

Viper

SNIPER

A fan of piercing shots.

Bastion

GUARDIAN

A shield charge that hurts and knocks back.

Pulse

MEDIC

Healing shots and a nanobot zone.

Dash

COURIER

A teleport and a burst of shots.

Meet the heroes

Promotional chest illustration; you can check how rewards look in the game — Promotional illustration

AVAILABLE IN THE GAME

CHESTS AND REWARDS.

Five chest levels: bronze, silver, gold, epic and legendary. Collect chests while playing and discover rewards.

Bronze

Silver

Gold

Epic

Legendary

Play now »

WE ARE MAKING THE GAME WITH YOU

GOT AN IDEA?
LET US KNOW.

Found a bug, have a suggestion or need help with your account? Write to us.

help@reactorzero.pl

For a bug, describe what happened and give your device and browser. Do not send your password.

THE CORE IS WAITING FOR YOU

READY FOR A ROUND TOGETHER?

Invite friends, pick your characters and see how long you can defend the core.

QUICK TEST: PLAY WITHOUT AN ACCOUNT Log in and play with others

Without an account you play solo with bots, and a match takes about 3 minutes. An account is needed for multiplayer and for saving your progress on the server.