Allegiance

Allegiance (PC, 2000) has an official source code release, FreeAllegiance/Allegiance, and 2 other public projects, including a source port.

Data checked 2026-10-13 · unbaked registry

Projects

FreeAllegiance/Allegiance

Source releaseMicrosoft Research shared-source release (2004), C++103 starspushed 2026-09-14MIT license

Allegiance - RTS + FPS Space Combat game

Community-maintained (pushed Sep 2026)

Allegiancearchived

Source releaseC++16 starspushed 2017-03-02custom license

Allegiance (2000) by Microsoft Corporation

development complete; status playable

AllegianceCore (headless client library)general toolnew, unvetted

Source portC#/MonoGame client + headless game-state library0 starspushed 2026-10-12MIT license

Allegiance - RTS + Space Combat MonoGame Client. Headless client-side game-state library and interactive text client for the AllegianceCore C# Server (2000-era space MMO reimplementation).

2026 ()

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What you need

Free game data is included with at least one project.

More on PC

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PCMindustrySource releaseAgent environment201929k2026-10-11 PCosu!Source releaseReadable bytecode+1200719k2026-10-12 PCCommand & Conquer Remastered CollectionSource release202021k2025-01-16 PCRollerCoaster Tycoon 2ReimplementationAgent environment200216k2026-10-12 PCDune 2000Reimplementation199818k2026-10-11 PCAge of Empires IIReimplementation199914k2026-10-03 PCCataclysm: Dark Days AheadSource release201313k2026-10-12 PCCivilization VSource releaseReimplementation201011k2026-10-12

Found via osgameclones.com/, FreeAllegiance/Allegiance

GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.