The game used the same engine used by Grigsby's previous Guadalcanal Campaign, which was coded and distributed as uncompiled Applesoft BASIC. His previous game, SCP – Containment Breach, is also available as free and open-source software under CC BY-SA license.

Source code was released on 4 June 2017 on GitHub under a restrictive mods allowing license. The game was released in 2017 commercially on Steam by independent developer Undertow Games (Joonas 'Regalis' Rikkonen). Undertow Games / Joonas 'Regalis' Rikkonen Source code released to the public under no license on June 11, 2021, upon the cancellation of the game. Also later Origin Systems offered the source code on their FTP servers. Richard Garriott distributed the Applesoft BASIC written game originally as source code. Games with source code available on release Title In some cases when a game's source code is not available by other means, the game's community 'reconstructs' source code from compiled binary files through time-demanding reverse engineering techniques. The game may be written in an interpreted language such as BASIC or Python, and distributed as raw source code without being compiled early software was often distributed in text form, as in the book BASIC Computer Games. SourceForge or GitHub), or given to selected game community members, or sold with the game, or become available by other means. The source code may be pushed by the developers to public repositories (e.g. Such source code is often released under varying (free and non-free, commercial and non-commercial) software licenses to the games' communities or the public artwork and data are often released under a different license than the source code, as the copyright situation is different or more complicated. In several of the cases listed here, the game's developers released the source code expressly to prevent their work from becoming abandonware.

The source code of these commercially developed and distributed video games is available to the public or the games' communities. This is a list of commercial video games with available source code. ( August 2022) ( Learn how and when to remove this template message) Several templates and tools are available to assist in formatting, such as Reflinks ( documentation), reFill ( documentation) and Citation bot ( documentation).

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