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Multiplayer FPS games you can play in your browser

12 games · Updated October 8, 2026 · Most played first

You can play online FPS games in a browser with nothing to install. Not Halo is Halo-style multiplayer, Modern Claudefare is a Modern Warfare tribute with bots or online play, and Quake III Arena and shareware Doom have deathmatch.

Newer ones include Bioneural, with 8 maps and proximity chat, StickFrag for 16 players, and Undersphere, a multiplayer FPS inside a sphere.

Not Halo cover

#1 on this list

Not Halo

Halo-style multiplayer in a browser tab

by @CadenBurleson

Play Details
  1. 1
    Not Halo coverPlay Not Halo on nothalo.lol (opens in a new tab)

    Not Halo

    Halo-style multiplayer in a browser tab

    Phone-friendly
  2. 2
    Modern Claudefare coverPlay Modern Claudefare on modernclaudefare.com (opens in a new tab)

    Modern Claudefare

    Modern Warfare tribute FPS, bots or online

    Keyboard
  3. 3
    Survive The Night coverPlay Survive The Night on survivethenightgame.com (opens in a new tab)

    Survive The Night

    Co-op zombie FPS for 16: scavenge, board up, escape

  4. 4
    Doom coverPlay Doom on silentspacemarine.com (opens in a new tab)

    Doom

    Shareware Doom in WebAssembly, with deathmatch

    Keyboard
  5. 5
    Quake III Arena (Browser) coverPlay Quake III Arena (Browser) on q3.pieter.com (opens in a new tab)

    Quake III Arena (Browser)

    Quake III multiplayer in a browser tab

  6. 6
    Undersphere coverPlay Undersphere on playundersphere.com (opens in a new tab)

    Undersphere

    Multiplayer FPS inside a sphere

    Keyboard
  7. 7
    Return to Castle Wolfenstein (Browser) coverPlay Return to Castle Wolfenstein (Browser) on rtcw.pieter.com (opens in a new tab)

    Return to Castle Wolfenstein (Browser)

    RTCW multiplayer on Beach, in the browser

  8. 8
    Quake II (Browser) coverPlay Quake II (Browser) on q2.pieter.com (opens in a new tab)

    Quake II (Browser)

    Quake II multiplayer in a browser tab

  9. 9
    Quake coverPlay Quake on netquake.io (opens in a new tab)

    Quake

    id's Quake shareware in a tab, multiplayer too

    Phone-friendly
  10. 10
    QuakeWorld (Browser) coverPlay QuakeWorld (Browser) on q1.pieter.com (opens in a new tab)

    QuakeWorld (Browser)

    QuakeWorld deathmatch in your browser

  11. 11
    StickFrag coverPlay StickFrag on stickfrag.com (opens in a new tab)

    StickFrag

    16-player stickman FPS, against bots or friends

  12. 12
    BIONEURAL coverPlay BIONEURAL on bioneural.de (opens in a new tab)

    BIONEURAL

    8-map multiplayer FPS, proximity chat

Questions

Can I play against bots?
In some. Modern Claudefare and StickFrag let you play against bots or online.
Are these games free?
Yes. Every game here plays free in a browser tab. A few show ads or sell extras on their own sites.
Can I play them on a phone?
Games marked Phone-friendly have touch controls. The rest need a keyboard, so they're best on a computer.

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