Honestly? This is really, really solid for a free tech demo. Very short, but full of the same charm and wit Portal is known for. The only reason this isn't 5 stars is the control scheme; unless you're playing it on a Steam Deck, you will have a rough time with the controls. I'm lucky because I have a Steam Controller, but even that wasn't enough to fully poke around with everything. Also, the name segment with the mic didn't work on my end.