Not Halo
Halo-style multiplayer in a browser tab
Mashup Phone-friendly Multiplayer1.9K clicks
Shooter games
First-person, third-person and arcade shooters. Most clicked first. Multiplayer only.
Genre
Halo: Combat Evolved (Browser)
Halo CE in WebAssembly, co-op included; bring your own disc image
Mashup Multiplayer755 clicks
Modern Claudefare
Modern Warfare tribute FPS, bots or online
Mashup Keyboard Multiplayer482 clicks
Survive The Night
Co-op zombie FPS for 16: scavenge, board up, escape
Original Multiplayer246 clicks
Der Koloss
Zombie wave survival, solo or four-player co-op
Mashup Keyboard Multiplayer212 clicks
Doom
Shareware Doom in WebAssembly, with deathmatch
Mashup Keyboard Multiplayer114 clicks
Halo CE Mobile
Halo CE on your phone with online co-op; bring your own disc image
Mashup Phone-friendly Multiplayer105 clicks
Quake III Arena (Browser)
Quake III multiplayer in a browser tab
Mashup Multiplayer90 clicks
Undersphere
Multiplayer FPS inside a sphere
Original Keyboard Multiplayer81 clicks
Nacht der Untoten
World at War zombies map: solo or 2-4 player co-op
Mashup Multiplayer59 clicks
Null Range
Multiplayer space dogfighting
Original Phone-friendly Multiplayer52 clicks
Quake II (Browser)
Quake II multiplayer in a browser tab
Mashup Multiplayer45 clicks
Eyrie
Co-op wave roguelike
Original Phone-friendly Multiplayer42 clicks
Squadron X
Space dogfight campaign, plus multiplayer
Original Phone-friendly Multiplayer40 clicks
StickFrag
16-player stickman FPS, against bots or friends
Original Multiplayer38 clicks
Void Claim
Space mining, safer zones then PvP
Original Phone-friendly Multiplayer33 clicks
Return to Castle Wolfenstein (Browser)
RTCW multiplayer on Beach, in the browser
Mashup Multiplayer32 clicks
Quake
id's Quake shareware in a tab, multiplayer too
Mashup Phone-friendly Multiplayer31 clicks
One Beam
One hunter holds the only gun, the crew runs
Original Multiplayer29 clicks
BIONEURAL
8-map multiplayer FPS, proximity chat
Original Multiplayer21 clicks
The Rite
PvP arena shooter
Original Phone-friendly Multiplayer20 clicks
Magic Casters
1v1 and 2v2 magic duels
Original Phone-friendly Multiplayer20 clicks
Newbz
Blocky multiplayer FPS, Krunker style
Original Multiplayer17 clicks
Counter-Strike 1.6 Online
CS 1.6 online in a tab: Dust2, surf, zombie mod
Mashup Keyboard Multiplayer16 clicks