999 is, as the title suggests, a game about nine persons who have nine hours to go through nine doors. This is basically a VN with occasional puzzle segments in which you're locked in a room and have to find a way out. The puzzles are not very difficult for the most part, but there were a few towards the end that combined aspects from the previous rooms to make more engaging puzzles that actually took me a while to figure out.

I think the main appeal of this game is the story, and it definitely delivers on that front. It takes a while though for things to get interesting, but it really picks up when you start to figure out why you're trapped on the ship, and how the characters are related to each other. Another interesting aspect is the branching story, where each choice you make has the chance to change the ending you get. It's ideal to play all of the bad endings before going for the true end, but only one of them is actually required.

The presentation is also pretty good, I really enjoyed the voice acting for all of the characters and it helped endear them to me a lot. Music is good, although most of the tracks are kind of forgettable I think it does its job to set the mood and atmosphere well enough.

I played this on Vita, which most people say its an inferior version because of the way the game uses both screens on the DS, but I had it switched to novel mode almost the entire time so I don't think I really lost anything. Either version seems good to me, but I definitely like how well it uses the DS's gimmick.

I am giving this game a 999/1000.