was looking for a short game as a sort of stopgap between two longer ones on my backlog and this definitely hit the spot. although 1) the back quarter of the test rooms is WAY longer than the first three quarters, to the point it took me by surprise, and 2) this is definitely not the game to play if you suffer from motion sickness. i don't think i'm especially prone (i've played through all of the metroid prime trilogy and the only time it hit me was when i got badly lost underwater once) but even i had to take a few long breaks - and probably should have taken more but i was determined to finish it tonight. my only other quibble is that i found parts of the final boss a bit fiddly. otherwise, i think it wholly deserves its classic status and i'm sure i'll enjoy the second game when i get round to it probably years from now.