1.7 GB
Open-source reconstruction of Command & Conquer: Tiberian Sun.
OpenTS is a free rts game released under OpenTS engine: GPL-3.0; Tiberian Sun + Firestorm assets: freeware. It runs on Windows, needs about 1.7 GB of disk space, and requires no account, payment or trial. On a computer, the fastest route is the PlayBound Launcher. On a phone or tablet, use the official store or site instead.
One-click install
PlayBound fetches the official release — no third-party mirrors.
Click Install in PlayBound Launcher to download the complete OpenTS package, including the freeware Tiberian Sun and Firestorm game data.
Wait for the package to finish extracting. Campaigns, music and movies are included; no separate base game installation is required.
Launch OpenTS to enjoy campaign missions, skirmishes, or UDP multiplayer games.
Recommended first-time setup and configuration steps when launching OpenTS.
Install the complete OpenTS package through PlayBound Launcher.
Choose a campaign or skirmish from the game menu. Tiberian Sun and Firestorm game data, music and movies are already included.
Launch OpenTS to play skirmish, campaign missions, or host UDP multiplayer matches over your local network or VPN.
How to join and navigate multiplayer lobbies and servers in OpenTS.
Start a party in PlayBound Connect with friends to coordinate game settings and factions.
Ensure all participants have the same OpenTS version and Tiberian Sun game data installed.
Host a Network match in-game over UDP port 1234. Connect directly via LAN or over a shared virtual network.
Minimum
SSE2 CPU (Pentium 4 or newer) · 2 GB RAM · DirectX 11 / OpenGL 3.3 GPU · 1 GB storage
Recommended
Modern quad-core CPU · 4 GB RAM · Dedicated Vulkan / DirectX 11 GPU · 2 GB storage
OpenTS is an open-source source reconstruction of Electronic Arts' Command & Conquer: Tiberian Sun and Firestorm. It rebuilds the game engine as a modern standalone program.
The upstream OpenTS engine requires original game data. PlayBound packages it with the freeware Tiberian Sun 2.03 and Firestorm data from cnc-comm.com, so you do not need to install a separate base game.
OpenTS replaces obsolete 1990s IPX networking with standard UDP networking over port 1234. You can play over local area networks (LAN) or virtual private networks with friends.
The PlayBound package includes the Firestorm game data, campaigns, soundtrack and movies alongside the OpenTS engine.