NOTICE: Activation key must be used on a valid Steam account. Requires an internet connection.
About the game Worms™: Ultimate Mayhem 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!
Worms Ultimate Mayhem - Customization Pack The Worms™ Ultimate Mayhem “Customization Pack” features hilarious new additions to extend the already vast array of customization options available in the game, including a number of crazy new hats, glasses, gloves, 5 new speech-banks and 5 new gravestones. The “Customization Pack” also includes 5 new weapon payloads for the Weapons Factory.
Worms Ultimate Mayhem - Multiplayer Pack The Worms™ Ultimate Mayhem “Multi-player Pack” features 5 fantastic new multi-player maps for use across the numerous multi-player modes. The “Multi-player Pack” also includes 6 brand new achievements.
Worms Ultimate Mayhem - Single Player Pack The Worms™ Ultimate Mayhem “Single-player Pack” features brand new additions to the existing single-player challenge modes, with 8 new single-player challenges, including Sniper, Jet Pack, Super Sheep and Shotgun challenges. The “Single-player Pack” also includes 1 new multi-player map and 6 new achievements.
Worms™: Ultimate Mayhem Developed by Team17 Software Ltd. © 2011. Team17 Software Ltd, Worms™, Worms™ 3D and Worms™: Ultimate Mayhem are trademarks or registered trademarks of Team17 Software Limited. Original concept by Andy Davidson. All other trademarks, copyrights and logos are property of their respective owners. Developed and published by Team17 Software Limited.
1. Register an account
Go to www.steampowered.com and click 'login' at the top right corner of the website. After that, press 'Join Steam' in the middle of your screen to create your account.
2. Download Steam
Click the green button that says 'Install Steam' at the top right corner of the website, install Steam and login with with the account you created in step 1.
3. Click 'Games' at the top of your screen and select 'Activate a product on Steam'
4. Open the confirmation e-mail you received from Startselect and copy the code into the 'Product Code' box.
5. Confirm the code and install the game
6. You can access your games by clicking 'Library' at the top of your screen.
7. After the download is completed, you can enjoy your game!
Now on Startselect!
Now available at Startselect: Worms Ultimate Mayhem - Deluxe Edition. At Startselect you can purchase your digital games and giftcards anywhere and anytime. All of our products are fully authorized and supported by the publisher or developer.
Do you want to purchase this product? Just pick one of the payment methods, check out and you will receive your digital code almost immediately in your mailbox. If you run into any problems or if you have a question, our support team is standing by. We want to give you the easiest shopping experience, so you can use your product straight away!
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