Ever wondered what a cross between Tetris and Lemmings would look like? Well, wonder no more, 'cause... MouseCraft is here! MouseCraft is an A to B puzzle game where players help Schrödinger, the crazy cat scientist, in completing his mysterious, mice-powered invention.
Open the Steam client, login and locate the Games tab on the top menu. Click this and then select “Activate a Product on Steam…”
Enter your unique code that's displayed on the 'Orders' page of CDKeys.com and follow the prompts to activate.
Your game is now viewable in the “Library” tab and is available to download/install when you’re ready. You can find additional support for the Steam client here: https://help.steampowered.com/en/wizard/HelpWithSteam