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Free co-op games you can play in your browser

The most played co-op games on Foundplay right now are Survive The Night, BMX Mountain and We Die Below. All 23 here are free and play in your browser with no download, and 6 of them work on a phone.

23 games · Updated October 16, 2026 · Most played first

Co-op games have you working with other players instead of against them. You might hold off waves of zombies together, clear a dungeon as a party of four, fight a ship as one crew, or race to keep a factory running. Some are built for a fixed group size, others let anyone drop in. Several also work solo, with the co-op as an option when friends are around. Playing together in a browser means everyone just opens the same link, on whatever computer they have, without installing anything.

Foundplay lists 23 co-op games, every one an original game that its creator hosts on their own site, so Play takes you straight to them. After Survive The Night, BMX Mountain and We Die Below, the most played are Gravecrawl, Eyrie and UP! with a stranger. The newest ones are Drakon Warden and 6PM Escape. Of these 23, 6 work on a phone and 23 are marked as multiplayer. New games come out on Foundplay at 6 AM and 6 PM Pacific, and any that fit this tag join this page. The list below is sorted by plays and changes as people play.

Questions

What are the most popular co-op games?
By plays on Foundplay: Survive The Night, BMX Mountain, We Die Below, Gravecrawl and Eyrie. The list on this page is sorted most played first.
Which co-op games work on phones?
6 of the 23 are marked as playable on a phone, including We Die Below, Eyrie and UP! with a stranger. Each game's page says whether it works on a phone or needs a keyboard.
Are these games free?
Yes. Every game on Foundplay is free to play in a web browser, with nothing to download. Play opens the game on its creator's own site; some creators offer optional extras there.
How many people can play these co-op games together?
It depends on the game: some are for two, many are for up to four, and a few take larger groups. The pitch on each game's card usually says how many. On Foundplay: Survive The Night, We Die Below and Gravecrawl.

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