Alien Shooter
Alien Shooter (PC, 2003) has an open-source reimplementation, siohaza/OpenGromada.
Data checked 2026-10-15 · unbaked registry
Projects
ReimplementationC++20, SDL3, CMake11 starspushed 2026-10-07custom licenserelease 0.1.1runs on Windows, macOS, Linux
Reverse engineered engine powering various Sigma Games titles
Reverse-engineered engine of Sigma Games titles (Alien Shooter, Zombie Shooter, Theseus, Crazy Lunch, Locoland) with widescreen, gamepad support and raised limits; 0.1.1 (2026-08-31). Runs from the original game data.
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What you need
You need your own copy of the game: these projects ship code only.
More on PC
GameMethodYearStarsLast push
PCMindustrySource releaseAgent environment201929k2026-10-11PCosu!Source releaseReadable bytecode+1200719k2026-10-13PCCommand & Conquer Remastered CollectionSource release202021k2025-01-16PCRollerCoaster Tycoon 2ReimplementationAgent environment200216k2026-10-12PCDune 2000Reimplementation199818k2026-10-11PCAge of Empires IIReimplementation199915k2026-10-03PCCataclysm: Dark Days AheadSource release201313k2026-10-13PCCivilization VSource releaseReimplementation201011k2026-10-13Found via siohaza/opengromada
GitHub data checked 2026-10-15. Notes are summaries from the research pass; the project pages are the authority.