About
On Steam, 68% of 72 player reviews are positive (Mixed). It is Playable on Steam Deck.
Experience a story of crime and gang warfare as you fight your way through eight procedurally generated dungeons full of machine soldiers and superpowered weaponry, and explore a skill tree with numerous ways to power up your character as you overcome this traditional turn-based RPG.
Story
Asuna Hoshizuki is beautiful, loudmouthed, and hits like a freight train. A jobless dropout, she doesn't have much of a life, but she has a loving mother and a family restaurant she helps out at. But after a run-in with a band of yakuza, she finds herself deep in debt to a crime family. With a net worth amounting to a few loose coins and some pocket lint, she's left with no choice but to work for the very men she's indebted to. But in the process, she learns about a secret underground world, a cyberpunk city hidden from sight. Now to pay off her debt, Asuna will have to use her incredible strength to help the Matsuba Clan seize control of the crime-ridden Undercity.
Games like Undercity of Sin
same kind of game, other series
Media
Trailers
Releases
Earliest full release on each platform; regional dates can differ.
PC and Steam Deck
Steam store pageSteam Deck: Playable runs, but may need some tweaks
Requirements and Deck status as listed on Steam, checked Oct 29, 2026.
Undercity of Sin player count
concurrent players on SteamPlayers counted on Steam every one to six hours; the daily peak is the highest count of the day.