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Command & Conquer: Tiberian Sun cover art
Command & Conquer: Tiberian Sun. Command & Conquer: Tiberian Sun screenshot © Electronic Arts, via IGDB. Unofficial site, not affiliated with the publisher.
PC port · Windows → PC

OpenTS (Command & Conquer: Tiberian Sun engine rebuild)

A community-led, open-source rebuild of the Tiberian Sun engine as a standalone program, targeting Tiberian Sun 2.03 Firestorm, based on EA's GPL C&C source and reverse engineering. Windows only.

WorkingDecompilationNeeds your own copyv0.1.0Updated

You need your own copy of Command & Conquer: Tiberian Sun. This port only runs with files from a copy you own; there is no download or play button here. No copy? These play in your browser right away, no files needed: Chrono Divide (Red Alert 2 in the browser), BO1 Zombies (vel.gg), GTA 3 Online (quenq III Web).

What you need

Tiberian Sun installed from Command & Conquer The Ultimate Collection (Steam or the EA app), plus Windows 10 version 1903 or newer.

Official releases ↗GitHub repository ↗

We do not host any files. Only download from the project's official source.

Every version of Command & Conquer: Tiberian Sun 3

  1. OpenTS (Command & Conquer: Tiberian Sun engine rebuild)This page

    WorkingDecompilation

    A modern and faithful open source rebuild of the Tiberian Sun engine.

    Runs on Windows 10 1903 or later (32-bit and 64-bit builds)Needs files from a copy you own★ 6060.1.0 · Aug 27, 2026

    GitHub ↗

  2. Vinifera

    ActiveDecompilation

    Vinifera is a C&C: Tiberian Sun engine extension implementing new logics and fixing bugs.

    ★ 98v1.0.0.1 · Aug 23, 2026

    GitHub ↗

  3. ts-patches

    ActiveDecompilation

    Command and Conquer: Tiberian Sun patches for CnCNet online gameplay.

    ★ 50latest · Aug 20, 2026

    GitHub ↗

We link to each project's own page and host no game files. Version data from project pages, our daily checks and awesome-decomp-games (CC0).

Short answer

OpenTS is a community-led, open-source rebuild of the Command & Conquer: Tiberian Sun engine as a standalone program, targeting Tiberian Sun 2.03 Firestorm. It runs on Windows 10 1903+ with the game installed from The Ultimate Collection (Steam or EA app). Latest release: 0.1.0, 27 August 2026.

This site is not affiliated with OpenTS or Electronic Arts. We do not host any files and only link the project’s official pages.

What it is

Westwood’s Tiberian Sun (1999) and its Firestorm expansion still have a modding and multiplayer scene. Most community work so far, such as Vinifera, extends the original executable.

OpenTS takes a different route: “Instead of patching or extending the retail executable, it rebuilds the engine as a standalone program” (OpenTS README). It is “a playable engine based on Electronic Arts’ GPL-released source for related Command & Conquer games and Tiberian Sun-specific reverse engineering”. The README is equally clear about what it is not: not a remaster or remake, not an official EA source release, and not a distribution of the game’s assets.

Current status

  • Status: Working and very new (repository created 28 June 2026, last update 2 November 2026).
  • Latest release: 0.1.0, 27 August 2026, with 32-bit and 64-bit Windows builds. Nightly builds are linked from the README.
  • Platforms: Windows 10 version 1903 or newer. Wine may work, but there is no supported Linux build.

What you need

  • Tiberian Sun from Command & Conquer The Ultimate Collection on Steam or the EA app.
  • Windows 10 version 1903 or newer.

We do not link any copies of the game data.

How setup works (overview)

  1. Install Tiberian Sun from The Ultimate Collection.
  2. Download the release zip (32-bit or 64-bit) from the releases page.
  3. Extract it into the Tiberian Sun game folder.
  4. Run Game.exe.

Keep saves and network games on one build: 32-bit and 64-bit saves and network packets are not compatible, and a mismatch shows up as a failed load or a desync.

For Red Alert and Tiberian Dawn, see OpenRA; for Generals, see Generals Zero Hour.

FAQ

What is OpenTS?

A community-led, open-source reconstruction of Command and Conquer Tiberian Sun that rebuilds the engine as a standalone program instead of patching the retail executable. It targets Tiberian Sun 2.03 with the Firestorm expansion.

How do I install OpenTS?

Install Tiberian Sun from Command and Conquer The Ultimate Collection on Steam or the EA app, extract the OpenTS release zip into the Tiberian Sun folder, and run Game.exe. It needs Windows 10 version 1903 or newer.

Is OpenTS a remaster or an official release?

No. The README says it is not a remaster or remake, not an official Electronic Arts source release, and not a distribution of the game's assets. It is an independent community project.

Should I use the 32-bit or 64-bit build?

The 32-bit build runs on 32-bit and 64-bit Windows and has the longer track record; the 64-bit build needs 64-bit Windows. Keep saves and network games on one platform, because the two builds are not compatible with each other.

Unofficial. This page is written by an independent directory. It is not made by, endorsed by or affiliated with Electronic Arts (developed by Westwood Studios) or OpenTS developers (OpenTS (Command & Conquer: Tiberian Sun engine rebuild)'s author). We do not host any files, and we never link to game files, ROMs or ISOs.

Sources

This page was last updated on Nov 3, 2026. A date after a source is the day we read it. Versions and steps follow the official project; if they differ, the official source wins.

More ports

See every native PC version of a console game in our recompiled games list, browse all PC ports of console games, or go back to the full list of ported games.