This is a game I got a long time ago in a bundle, that I never played until recently. This is another one of those cases where I regret not touching it for so long because it's so good.

It's a platformer. Your only action, other than activating computers/teleporters/etc. and talking to the other characters, is reversing gravity. You cannot jump. This makes getting through rooms interesting, because an obstacle you could just jump over in a different game requires you to think to get past it. The game is difficult in some parts, but the controls (arrows/WASD, space) feel natural, and tight. There is some momentum, but yet again, it feels natural.

Game's puzzles require a fair amount of thought, and many of them timing, with moving enemies and platforms. You have checkpoints placed before and after every puzzle, and infinite lives. You will be thankful for these. There are 20 shiny trinkets you can obtain hidden throughout the map, and these will require more thought than ordinary progression. The hardest one's room names actually taunt you. "Your Bitter Tears...Delicious" indeed. But the difficulty never reaches IWTBTG-level frustration. When you lose, you feel like it's your fault, that you messed up. It doesn't pull cheap moves on you, and with infinite lives and checkpoints, you do not have to constantly replay a part just to try a hard part again. However, if you choose to try to beat the whole game without a single death... I wish you luck.

The game features a simple, pleasing-to-the-eye Atari/Commodore/other-machine-from-the-era art style, that works really well for it. Its soundtrack consist of

So, what do I say? I definitely suggest buying this one. Normal cost is $5 on Steam, you support the indie scene, get a good amount of gameplay in the main mode, and you also have other modes such as time trial and flipped mode that extend the gameplay. I regret putting off playing this one as long as I did.