• STEP 1) Buy Portal 2 for $1--or-- Buy Portal 1 + Portal 2 for $1.48
store.steampowered.com/bundle/234...
• STEP 2) Install the FREE "Portal Stories VR" DLC/Mod
store.steampowered.com/bundle/234...
• STEP 2) Install the FREE "Portal Stories VR" DLC/Mod