Excellent, I might give it a go, as I haven't any half decent vr games.. Also the being able to play it mainly with 1 hand is great for me.Yes you can play HL Alyx sitting down. You'll just need enough room around your wheelchair to move your arms around. It's very accessible, as the gravity glove mechanic means you can grab things from a distance, and it has lots of movement and accessibility options. It even has a single hand control mode, and a duck/crouch button.