How to activate Steam Game Key / Code Gameflip Help May 11, 2018 01:03 Updated Follow Steam Activation Code Launch Steam and log into your account. Go to Games then click on Activate a Product on Steam... Enter the code you purchased. Go to your games list in Steam, highlight the game, and click install. Related articles How do I activate my digital code? What is the Gameflip Guarantee? Why is my listing On Hold? (dispute) How to redeem Steam Gift What is Gameflip’s return policy? Comments 0 comments Article is closed for comments.