The Boss of Mong Kok
Open-world crime game set in Hong Kong's Mong Kok
Original Keyboard1.6K plays
Free open world games you can play in your browser
The most played open world games on Foundplay right now are The Boss of Mong Kok, Arkenfall and RED SANDS. All 9 here are free and play in your browser with no download, and 2 of them work on a phone.
9 games · Updated October 15, 2026 · Most played first
Open world games give you a large map to explore at your own pace instead of a line of levels. You choose where to go: drive a city, ride across a desert, sail between islands or fly between planets. Most have missions or quests, but the fun is often in wandering. The games here are original open worlds by independent creators, from crime cities to westerns and space. They are bigger downloads than most browser games, so the first load can take a moment.
Foundplay lists 9 open world games, every one an original game that its creator hosts on their own site, so Play takes you straight to them. After The Boss of Mong Kok, Arkenfall and RED SANDS, the most played are Coral City, New Rad City and Sojourner. The newest ones are Detours and Astera Online. Of these 9, 2 work on a phone and 2 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.
Arkenfall
Open-world fantasy with a boss at the end
Original Phone-friendly322 plays
RED SANDS
Open-world western on horseback
Original Keyboard308 plays
Coral City
Neon open-world drive at golden hour
Original Keyboard214 plays
New Rad City
Open-world RPG in post-nuclear 1989 Manhattan
Original Keyboard192 plays
Sojourner
Open-world space explorer built on live NASA data
Original106 plays
Salty Seas
Open-world pirate MMO: sail, fire broadsides, board
Original Multiplayer99 plays
Astera Online
Open-world space MMO where you can mine, haul, build, trade, fight and conquer.
Original Phone-friendly Multiplayer15 plays
Detours
Walk around a small open-world university campus
Original Keyboard0 plays
Questions
- What are the most popular open world games?
- By plays on Foundplay: The Boss of Mong Kok, Arkenfall, RED SANDS, Coral City and New Rad City. The list on this page is sorted most played first.
- Which open world games work on phones?
- 2 of the 9 are marked as playable on a phone, including Arkenfall and Astera Online. 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.
- Do open world browser games save my progress?
- Most save in your browser or on the game's own servers. Clearing your browser data can reset a browser save.