What Is Gun Mayhem?

Gun Mayhem is an arena shooter in the classic Flash lineage: cartoonish violence, quick rounds, and a single goal — push everyone else off the stage. The controls are one-directional, so the depth comes from positioning, weapon choice and knowing when to jump rather than from complexity. It supports local play for up to four people on one keyboard and also runs as an online multiplayer game, which is why it has stayed on the browser scene for years: the 2026 play figures still put it in the top tier of arena shooters, with close to ten million plays a month on the long-running portal track.

The single-player side is a campaign with cooperative options and a set of modes — Last Man Standing, One Shot One Kill, Gun Game and Duck Defense — across twelve maps and more than sixty firearms.

How to Play

You run, you jump, you shoot, and you collect. Falling off the arena is fatal, so the edges are the real battlefield: a player camping near a ledge wins more rounds than a better shot in the open.

Weapons scatter around the map. An early shotgun pickup decides the first thirty seconds of a match, and hoarding a strong rifle without moving usually means losing it to the next person through the stage.

Controls

  • Player 1 — arrow keys to move, space to shoot and jump
  • Players 2 to 4 — WASD, with separate fire keys
  • Mouse — aim, where the build supports it

Tips

Fight near the edge, not in the middle. Every exchange in the open is a coin flip. Every exchange next to a ledge is decided by whoever commits to the knockback first.

Reload thinking. Ammo runs out in the worst possible moment if you fire from the hip. A short pause behind cover beats an empty magazine.

Pick up the weapon you will actually use. A shotgun at close range beats a sniper at mid range, and the map decides which is which.

In local multiplayer, agree on roles. Four people on one keyboard get frantic fast. Deciding who takes which side of the arena before the match removes most of the chaos — and the physics is chaotic enough already.

Frequently Asked Questions

Can you play Gun Mayhem with two people on the same computer?

Yes. Local multiplayer supports up to four players, with player one on the arrow keys and the rest on WASD. The game also has online multiplayer for a real opponent across the internet.

Is Gun Mayhem free to play?

Yes — the browser build runs with no download and no account. There is nothing to buy to play the core modes.

What modes are included?

Last Man Standing, One Shot One Kill, Gun Game and Duck Defense, plus a campaign mode that includes a cooperative option. Twelve maps and over sixty firearms are available across them.

Does Gun Mayhem work on a phone?

It is built for a physical keyboard. On touch devices the controls are cramped, so a laptop or desktop is the better way to play — especially with more than one person.

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