Name: Cosmo's Cosmic Adventure (Steam)
Brand: 3D Realms (Apogee Software)
SKU: KT-EED93FC801
Price: 2.77 EUR
Availability: InStock

Cosmo's Cosmic Adventure is an exciting journey across a forbidden planet full of dangers and surprises. Can he save his parents before they're lightly seasoned and devoured? Cosmo is a lovable extra-terrestrial with a special ability: He has hands that work like suction cups! He can cling to walls, ledges, and all sorts of things. Using his suction hands, Cosmo is able to avoid dangers, scale cliffs and get to places other aliens can't reach. Features Creature Closet: Over 20 unique and surprising creatures. Superstar: Cosmo has many tricks, such as scaling walls with his suction hands. Size and Simplicity: Massive but easy-to-explore levels. Save Your Game: Game saves, built-in hints, and much, much more. Controller Support: Partial Xbox 360 Controller support.

Redeem on Steam

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Step 2: Open the Games menu, then choose Activate a Product on Steam…
Step 3: Enter the key and follow the prompts.
Step 4: The game appears in your Library.

Steam's redeem page Full guide for Steam

Activation notes from the publisher

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "MY GAMES" tab and start downloading.