Endless Space 2 [Steam PC/Mac]
(19,126 reviews, 83% positive, trading cards)
1. Sign up for and log in to a Relic account
2. Opt in to receive the Company of Heroes email newsletter in account settings
3. Link your account to Steam
4. Click redeem on the rewards page to have the key directly added to your account
This should be a fairly straightforward process if you start at https://account.community.companyofheroes.com/account/newsletter, though there's also FAQ if you get stuck.
