This game is, in a word, incredible. Always has been, always will be. You play as a scientist whose experiment sends him to *drumroll* another world. The game play is simple in some respects and very complex in others, with very little in the way of controls to learn and brain-bending environmental puzzles that'll torture you to no end. This HD remake, despite improving the background graphics signficantly, thankfully leaves the characters untouched (aside from them being hi-res now). Really, this remake is a dream come true. I can't stress enough how great this game is, and it'll age even better now.