The listing, Two (2) Steam keys with the value up to $6.99 USD has ended.
1. Chess the Gathering - Steam key
2. Bionic Dues - Steam key with the value of $6.99 USD
http://store.steampowered.com/app/238910/
Activating game key on Steam:
1. Launch the Steam client software and log into your Steam account.
2. Click the Games Menu.
3. Choose Activate a Product on Steam...
4. Follow the onscreen instructions to complete the process.