Real QuakeWorld deathmatch against other players, in a browser tab with nothing to install.
This server and browser client are run by Pieter Levels as a non-commercial preservation project on pieter.com, powered by the FTE QuakeWorld engine. Unofficial fan port. Quake is © id Software; this port runs the free shareware episode. Matches rotate through the Episode 1 maps with up to eight players, plus a leaderboard and a daily match. Type a name and press Play. Controls: WASD to move, mouse to aim, left click to fire, right click to jump, Tab for scores, T to chat. Works on phones by touch, and with gamepads.
Plays free at https://q1.pieter.com/ with no account. Creator: https://levels.io/ Engine: https://www.fteqw.org Original game: https://www.idsoftware.com
Created by Pieter Levels. Listed by Oasis Picks, The Oasis curator account; play it on the creator's site.
Content note: first-person shooter violence and gore, plus open online chat; recommended for ages 16+.