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Kumitantei: Old-School Slaughter

Kill each other...for science! The class of '89 is trapped in an elite school killing game. Investigate, solve, and expose your classmates in Kumitantei™: Old-School Slaughter, an episodic murder-mystery ADV card-battler inspired by retro anime.

OfficialApr 23, 2026 · Mango FactoryAdventureIndieRPGAdjustable DifficultyCustom Volume ControlsWindows

Current best

$11.99

at GOG · Jul 17

All-time low

$11.99

Jul 13, 2026

Stores tracked

2

sources indexed

Review signal

No reviews

Kumitantei: Old-School Slaughter cover

Current best · GOG

$11.99$14.99−20%

Observed Jul 17

View best listing

Current low target

$11.99 · matches the current indexed low

KeyDwarf only tracks observations — checkout happens on the store.

Tracked Stores

Best indexed price $11.99 at GOG.

2/2
G

GOG

BestOfficialIn stock

Kumitantei: Old-School Slaughter · Region US · Jul 17

$11.99

was $14.99 · −20%

View listing
S

Steam

OfficialIn stock

Kumitantei: Old-School Slaughter · Region US · Jul 13

$11.99

was $14.99 · −20%

View listing
How trust is scored: KeyDwarf combines source type, known retailer posture, marketplace risk, activation-region warnings, and source transparency. Checkout and support still happen with the external seller.

Price History

3 observations
Low $11.99
Best observed priceAll-time low

All-time low

$11.99

Jul 13, 2026 · Steam

12-week avg

$12.99

3 recent observations

Current vs low

At low

Current $11.99

Recommendation

At indexed low

current indexed price matches the low

Lowest indexed daily price per currency. KeyDwarf tracks listings and does not sell keys.

Media

12 indexed

Common Questions

Where is Kumitantei: Old-School Slaughter cheapest right now?

Kumitantei: Old-School Slaughter is currently indexed at $11.99 from GOG. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.

What is the historical low for Kumitantei: Old-School Slaughter?

The indexed low for Kumitantei: Old-School Slaughter is $11.99 from Steam, observed Jul 13, 2026. The current indexed price is at that low, so KeyDwarf labels it "At indexed low".

Is the top source safe?

GOG is labeled "Official store" in the index. KeyDwarf tracks the listing and source risk, but checkout and support stay with the external store.

What is the review signal?

No review summary is indexed for this game yet.

Can KeyDwarf notify me about a lower price?

Use the alert target control on this page to save a watch target after sign-in.