Can I play Madness Online in my browser?

Yes. Madness Online runs right on this page — press Play at the top. There is nothing to download or install, and it works in any modern browser, Chromebooks included.

What games are like Madness Online?

If you like Madness Online, try Bapbap, Deadswitch 3 and Nikola's Fate. There is a longer list on the “Games like Madness Online” page.

Madness OnlineNew tab

Loads from madness.st when you press play.

Shooter · Browser game

Madness Online

Released February 5, 2026 (9 months ago)

Also known as Madness.st

Itch.io

Runs in any browser — no download, works on Chromebook

About Madness Online

Madness Online is a brutal 2D top-down multiplayer survival shooter set in a procedurally generated infinite world. Players must navigate a hostile, apocalyptic environment by fighting off relentless waves of zombies and enemy entities. The game blends intense, fast-paced gunplay with deep survival mechanics, allowing players to gather resources, craft essential gear, and construct fortified bases. Featuring dynamic combat with dodge mechanics and an expansive inventory system, players can team up with friends to build and survive together, or face the unforgiving world solo

Following a catastrophic containment breach at a sprawling, classified industrial megacomplex, the surrounding region has been plunged into a perpetual state of chaos. The atmosphere is permanently scorched red by anomalous energy fields, which have violently mutated the local population and wildlife into hostile, relentless entities. Players take on the role of highly trained rogue operatives and hardened survivors trapped within this ever-shifting Quarantine Zone. With society completely dissolved and no extraction coming, the only objective is survival. To stay alive, these isolated fighters must scavenge the ruined, procedurally generated sectors, reverse-engineer abandoned technology to construct heavily fortified safe havens, and push back against the endless hordes of abominations.

Screenshots and video

Playing with other people

Multiplayer support on record. Co-op works online.

Tags and modes

Languages

Madness Online: questions and answers

Can I play Madness Online in my browser?: Yes. Madness Online runs right on this page — press Play at the top. There is nothing to download or install, and it works in any modern browser, Chromebooks included.
What games are like Madness Online?: If you like Madness Online, try Bapbap, Deadswitch 3 and Nikola's Fate. There is a longer list on the “Games like Madness Online” page.