Play Mk48.io, a multiplayer ship-combat game, or explore its source repository.
Open source
17 alternativesHypersomnia
Play Hypersomnia, a multiplayer top-down shooter written in C++ with a web version available.
About Hypersomnia
Hypersomnia is a community-driven, open-source multiplayer top-down shooter built from scratch in C++ without a game engine. It offers a free browser playable version, plus small (29 MB) downloadable native builds for Windows, Linux, and macOS.
The game includes an in-game map editor for instant playtesting, 24 unique firearms, and two game modes: bomb defusal and gun game. Its networking uses deterministic simulation to sync gameplay consistently across browser, native, and ARM builds, transmitting only player inputs rather than full game state.
Key features
- Open-source multiplayer top-down shooter built from scratch in C++
- Free browser playable version alongside native Windows, Linux, macOS builds
- In-game map editor for instant playtesting with friends
- 24 unique firearms and two game modes: bomb defusal and gun game
- Deterministic cross-platform networking for browser and native clients
- 29 MB small download size with interactive in-game tutorial
Best for: Fans of tactical top-down shooters seeking free, open-source cross-platform multiplayer gameplay.
Good for
- Forever free and open-source with no cost to play
- Deterministic networking works consistently across browser, native, and ARM builds
- Includes an in-game map editor for custom content creation and instant playtesting
Hypersomnia at a glance
- Category
- Gaming › Browser Multiplayer Games
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Hypersomnia alternatives
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Hypersomnia FAQ
Is Hypersomnia free to play?
Yes, the game is forever free and open-source, with a free browser version available at play.hypersomnia.io.
What platforms is Hypersomnia available on?
It is playable in web browsers, with native downloadable builds for Windows, Linux, macOS, and ARM (aarch64) devices.
Does Hypersomnia include a map editor?
Yes, it comes with an in-game map editor that supports instant playtesting of work-in-progress maps with friends.
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