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Load your weapons and experience a whole new dimension in destructive turn-based cartoon action!

Worms™: Ultimate Mayhem is the definitive 3D "Worms™" game! Load your weapons and experience a whole new dimension in destructive turn-based cartoon action! Taking the game into 3D creates all-new strategic and gameplay possibilities. With over 70 single-player missions and challenges, online and local multi-player for up to 4 players, 5 multi-player modes, Steam Achievements, unprecedented customization of both worms and weapons, and fully destructible environments, it’s bursting with anarchic mayhem. Battle and puzzle your way through all of the missions from both "Worms™ 3D" and "Worms™ 4: Mayhem" - it’s essentially two games in one. With the addition of HD visuals, gameplay enhancements and new extra content, it is the ultimate 3D "Worms™" collection!

Steam account required for game activation and installation

Windows MINIMUM:
OS: Windows 7 / Vista / XP
Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
Memory: 2GB
Graphics: 512 MB NVIDIA GeForce 8400 / ATI Radeon HD 4650 or higher
DirectX®: 9.0c
Hard Drive: At least 1.8 GB of Space
Sound: DirectX 9.0c compatible
Other: Internet connection required

Language Support:
English, French, German, Spanish, Italian

To activate the Steam key you've received, follow the instructions below;

First up, open the Steam client. (If you don't have it, simply click the "Install Steam" button here => Steam Store )
Sign in to your Steam account. (If you don't have one, click here to create a new one => Steam Account)
Click on the "ADD A GAME" button in the bottom corner of the client.
Then, select "Activate a product on Steam..."
Write down or copy-paste the activation key that you've received from %s in the window.
Your game is now visible in your library! Click on your "Library".
And finally, click on the game and select "Install" to start your download.