IMHO.

Kumitantei: Old-School Slaughter vs Prison Notes

Kumitantei: Old-School Slaughter and Prison Notes both land in Indie, Adventure, RPG on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Indie, Adventure, RPG on Steam. Prison Notes (2025) is 1 year older than Kumitantei: Old-School Slaughter (2026). Prison Notes is currently ~26% cheaper on Steam than Kumitantei: Old-School Slaughter (9.99 USD vs. 13.49 USD). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.

Which should you pick?

Choose Kumitantei: Old-School Slaughter

Choose Kumitantei: Old-School Slaughter if you want the Custom Volume Controls, Adjustable Difficulty, and Save Anytime side of the pairing. On Steam, it's Steam Deck Verified, so handheld play works out of the box. Kumitantei: Old-School Slaughter launched in 2026.

Choose Prison Notes

Choose Prison Notes if you want a Strategy experience. On Steam, it's currently about 26% cheaper on the Steam Store. Prison Notes launched in 2025.

Both Kumitantei: Old-School Slaughter and Prison Notes sit in Indie, Adventure, and RPG on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.

Side-by-side comparison

Kumitantei: Old-School Slaughter vs Prison Notes — Steam metadata comparison
Kumitantei: Old-School Slaughter — Steam game coverKumitantei: Old-School SlaughterPrison Notes — Steam game coverPrison Notes
Released20262025
GenresIndie, Adventure, RPGStrategy, Indie, Adventure, RPG
PlatformsWindowsWindows
Steam DeckDeck VerifiedUnrated
Price13.49 USD9.99 USD
Steam reviews89.6% positive (164 reviews)1 reviews
MultiplayerSingle-player onlySingle-player only
DevelopersMango Factory闻岚工坊（Vinland Studio）

Side by side

Kumitantei: Old-School Slaughter vs Prison Notes — FAQ

Should I play Kumitantei: Old-School Slaughter or Prison Notes first?
If you want chronology, Prison Notes (2025) came out before Kumitantei: Old-School Slaughter (2026). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
Are Kumitantei: Old-School Slaughter and Prison Notes similar?
They overlap on Indie, Adventure, RPG on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
Does Kumitantei: Old-School Slaughter run on Steam Deck?
Yes — Kumitantei: Old-School Slaughter is rated Deck Verified by Valve. Prison Notes doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.
Kumitantei: Old-School Slaughter vs Prison Notes (2026) · imho.run