Hypersomnia is a free, open-source online shooter that combines the tactics of Counter-Strike, the dynamics of Hotline Miami, and the pixel art nostalgia of old-school RPGs. The game, written in modern C++ without a game engine, includes 24 unique firearms, four grenade types, seven melee weapons, and six magic spells, and offers an in-game map editor for limitless community content. The game is playable and has servers running 24/7, and although currently intended for quick online matches, the developer plans to introduce elements of RPG with hardcore PvP mechanics. The game features cute fish and insect AI with flocking behaviors, and the Editor took over a year to implement.
https://github.com/TeamHypersomnia/Hypersomnia