This is my favorite game of all time. It's a complete single-player experience from an indie-developer that offers over 100 hours worth of story and gameplay, without any steam workshop mods that add more replay ability. The story is very grim and dark but so compelling in how the game presents the world and characters.

The official soundtrack by Mili, and the in-game BGM by Studio EIM (each Librarian has their own theme song, by the way, which gets more intense as the battle progresses) are way too good, they use the music as part of the story telling narrative and the moment when you go into the boss fight and one of the songs from the soundtrack plays, it feels incredible.

This game is hard. It's ♥♥♥♥♥♥♥ challenging, and I'm an avid card game player and the mechanics (often time, puzzle fights) are really interesting and novel. Every single Realization Fight is a Puzzle that is based on the lore of the enemy that you're going against, and the fights are well thought out, even if they are unfair or ♥♥♥♥♥♥♥♥ at times. There are guides and information resources online if you ever need help, but the fights are challenging nonetheless. There are also some noteworthy QoL mods on the workshop such as No Grind, which is excellent in avoiding redundant fights just to farm for cards.

I started this game without playing their previous title, Lobotomy Corporation, which the story in Library of Ruina continues from. You can play this without LobCorp but I watched the story of LobCorp on Youtube and it made me appreciate Library of Ruina much more. The Project Moon Universe that they have built up since LobCorp, Library of Ruina and now onto their 3rd game Limbus Company is one of the most incredible experiences I have ever had, and I look forward to what they have planned.