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🇵🇱 Poland-based free & open-source multiplayer shooter whose code was used in Assassin's Creed and Skydio drones. Written without a game engine, in C++, just 50 MB in size, 10 years in development, only one programmer and two designers. Featured in Linux Magazine (page 89), Liam @ GamingOnLinux and even on GitHub Blog.

Played on 39th PolyLAN tournament in Switzerland.

It also runs in the browser.

Now on Steam.

Official YouTube Trailer.

Download all logos & screenshots as a ZIP file.

Socials
In Media
Videos
Game Screenshots
Logos
YouTube miniatures
Icons
Factsheet
Descriptions
Social media tags
- For gamers
- For programmers
Author Bio
Credits

Socials

itch.io: https://hyperdev.itch.io/hypersomnia
Browser version: https://hypersomnia.io
Discord: https://discord.com/invite/YC49E4G
Steam: https://store.steampowered.com/app/2660970/Hypersomnia/
Telegram: https://t.me/hypersomnia_io
Telegram (server monitor): https://t.me/hypersomnia_monitor
Source code: https://github.com/TeamHypersomnia/Hypersomnia
Homepage: https://hypersomnia.xyz
Twitter: https://twitter.com/teamhypersomnia
Twitch: https://www.twitch.tv/directory/category/hypersomnia
YouTube: https://www.youtube.com/@teamhypersomnia
Mastodon: https://pol.social/@hypersomnia
Contact: patryk.czachurski@gmail.com

To reach me on Matrix, you can hop onto the onFOSS chat (I'm friends with them) and ping @pythagoras: https://matrix.to/#/#irc_#onfoss:matrix.f-hub.org

Note: Discord is the #1 social. It is the home of our community where devs and players meet.

In Media

(You could be here! Let me know about your publications at patryk.czachurski@gmail.com)

Liam @ GamingOnLinux: Sounds like some impressive tech going on behind the scenes.
GitHub Blog: Not just fun, it’s technically innovative.
Linux Magazine: The whole package is a zany quick blast of adrenaline.
HackerNews: Show HN: Open-source shooter which made it to AC: Valhalla and Skydio drones.
lubiegrac.pl: Dziś w PSSG prezentujemy coś niezwykłego, tytuł który ma całkowicie inne podejście niż większość gier prezentowanych w PSSG.
pepper.pl _{(461 votes)}
Open Source Friend _{(200 votes, 20k views)}
polskigamedev.pl: Twórcy marzy się, by Hypersomnia stała się profesjonalną grą eSportową.
zgrywuski.pl: Bez wymagań, bez silnika, bez litości.
C++ Learning _{(11k subscribers channel)}
linuxgameconsortium.com: Hypersomnia: a tough shooter you can shape.
ifun.de: Hypersomnia: Freier Multiplayer-Shooter für Mac, Win und Linux.
GAMINGDEPUTY: Hypersomnia is a free multiplayer shooter for Mac, Win and Linux.

Videos

Game Screenshots

Logos

menu_game_logo.png (585x104)

discord_thread.gif (460x310)

Suitable as a miniature for Discord threads.

steam_card.png (460x215)

github_card.png (920x460)

twitch_capsule.png (600x800)

twitch_capsule_nologo.png (600x800)

steam_library_hero.png (3840x1240)

YouTube miniatures

yt_miniature_logo.png (1280x720)

yt_miniature_nologo.png (1280x720)

yt_miniature_nologo_alt.png (1280x720)

Icons

large_community_icon.png (224x224)

Factsheet

Hypersomnia is a free and open-source multiplayer top-down shooter for Windows, Linux and MacOS, and the Web.
rectpack2D, a part of the game code, was used in Assassin's Creed: Valhalla., Skydio drones, and 2 scientific papers.
Hypersomnia successfully employs cross-platform simulation determinism which is arguably the hardest game networking strategy.
- For a deep dive through technical details, visit this README.
First GitHub commit is from 2013.
The game became playable in 2017.
Permanently free, without hidden payments.
Heavily inspired by Hotline Miami and Counter-Strike.
Borne out of a childhood dream to have an own online game universe full of people.
Current goal is to become a professional eSports game, and to be fully extensible by community mods.
Comes with an in-game WYSIWYG editor that lets you host a work-in-progress map to test with your friends in a single click. Quickly iterate your map unlike in any game engine.
Licensed under AGPL-3.0 - this means everyone can modify Hypersomnia to their heart's content, and even publish these altered versions under their name as long as they keep the complete source code public.

Descriptions

Feel free to copy and reword these however you wish.

Note these are taken directly from GitHub and Steam pages.

Short teaser v1

Challenge your friend to an intense duel, or gather two clans to fight a spectacular war. Reawaken your competitive spirit in this relentless top-down shooter. Comes with an in-game map Editor! Forever free and open-source.

Short teaser v2

Online shooter with relentless dynamics. Challenge your friend to an intense duel, or gather two clans to fight a spectacular war.

Written in modern C++, without a game engine Forever free and open-source ❤️

Long teaser v1

Hypersomnia is a free and open-source competitive shooter.

The game has been online and playable since 2017. It brings together:

the tactics of Counter-Strike,
the dynamics of Hotline Miami,
the pixel art nostalgia of oldschool RPGs..
..and the potential for endless creativity thanks to an in-game map editor!

Hypersomnia aims to be the ultimate open-source 2D shooter - a grand community project extensible without limit.

Long teaser v2

Hypersomnia is a hardcore shooter mixing eSports with pixely nostalgia. Every match will be unforgiving - every duel a psychological battle.

More of a peaceful soul? Unleash your creativity in the WYSIWYG in-game map Editor with instant playtesting.

It's all free and open-source. Written without a game engine, in bare C++. Only 50 MB. Feel free to build it yourself from GitHub and modify Hypersomnia to your heart's content.

Features:

24 unique firearms.
4 grenade types, 7 melee weapons and 6 magic spells.
2 game modes: Bomb defusal (team-based) and Gun game (free-for all).
An in-game map editor that lets you host a work-in-progress map to test with your friends in a single click. Quickly iterate your map unlike in any game engine.

Lore teaser

Declare allegiance to one of the three factions whose apple of discord is a disparity between prevailing notions of moral excellence:

Metropolis. Atlantis. Resistance.

Will you take revenge for the unethical simulation of an inferior universe? Will you support the cruel experiments to win total control over metempsychosis? Or will you join the underground civilization that awaits the end of war in this dangerous afterlife reality?

Social media tags

For gamers

(comma-separated)

hypersomnia, hypersomnia shooter, teamhypersomnia, open source shooter, free shooter, free 2d shooter, 2d topdown, 2d topdown shooter, topdown shooter, top-down shooter, pixelart, pixel art, pixel-art shooter, indie shooter, 2d shooter, online shooter, competitive shooter, competitive 2d

For programmers

(space-separated)

game cpp c-plus-plus gamedev multiplayer pixel-art game-development free-software shooter multiplayer-game 2d-game shooter-game pixelart top-down-shooter 2d-shooter pixelart-game top-down-game indie-game top-down-shooter-game topdown-shooter

Author Bio

When I was 13, my only wish was to have my own MMORPG.
This is when I picked up my first programming book, Symfonia C++ by Jerzy Grębosz.
I'm completely self-taught, though I did enroll at the top3 high school in the country (at the time).
I began writing Hypersomnia once I turned 18. I'm now 29.
At 19 I went to work as a junior C++ programmer instead of going for a higher education.
I later went on multiple year-long breaks from work to focus on writing Hypersomnia, whilst living from my savings.
Since 2020, I have become passionate about investing, thanks to which my savings lasted way longer than they'd otherwise.
My financial decisions now let me focus 100% on Hypersomnia.
I use Arch Linux, and I wrote Hypersomnia in NeoVim, without autocomplete (but with 21 other plugins - vim-easymotion being my favourite).

Credits

See here.

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