Despite the fact I've played this for over an hour, I still have yet to do half of the experiments.

Why is that, you ask?

Because Longbow alone took up most of that hour. I got the opportunity to try it when it was just the simple white room demo and have been longing for it since. With the added gameplay it's insanely fun and I can't wait to play it again.

I also tried Slingshot, Postcards and Human Medical Scan, all of which were very impressive.

Given this is from Valve and free, you would have to be pretty stupid to not play it.

Despite the fact I've played this for over an hour, I still have yet to do half of the experiments. Why is that, you ask? Because Longbow alone took up most of that hour. I got the opportunity to try it when it was just the simple white room demo and have been longing for it since. With the added gameplay it's insanely fun and I can't wait to play it again. I also tried Slingshot, Postcards and Human Medical Scan, all of which were very impressive. Given this is from Valve and free, you would have to be pretty stupid to not play it.