It's a simple game with a fairly satisfying play loop. There's no story, despite the game page hinting at a mystery. You just go through a broken station, with a number of floors that varies depending on what difficulty level you choose, and fix the rooms.
The instructions are vague about a few things, such as how to repair the rooms themselves. You're just supposed to use the repair gun while in the room, and no repair percentage will appear unless there's a device in the room and you're facing it. The win condition is also just to repair all rooms, so supplying them with air is unnecessary to win. These are things you learn after a round or two, but for a while I thought you couldn't fix rooms without devices in them! You also have to find a weirdly specific point on devices to fix them but that's not too much of a problem, just makes fixing a bit finicky.
It hasn't got a lot of content, but it's a good time waster! It's the sort of game that's good to play while listening to a podcast, challenging enough to be fun but simple enough that you can focus on something else too.