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Vaccine

Find a vaccine for your infected friend before the time runs out, but be aware your friend will relapse sooner or later and you will have to find a new vaccine in a new randomly rebuilt house. Will you be able uncover the mystery to save your friend once and for all!?

OfficialFeb 21, 2017 · RNCActionViolentFamily SharingPartial Controller SupportSingle-playerWindows · Mac · Linux

Current best

$3.99

at Steam · Jul 5

All-time low

$3.99

Jul 5, 2026

Stores tracked

1

sources indexed

Review signal

67%

30 reviews

Vaccine cover

Current best · Steam

$3.99

Observed Jul 5

View best listing

Current low target

$3.99 · matches the current indexed low

KeyDwarf only tracks observations — checkout happens on the store.

Tracked Stores

Best indexed price $3.99 at Steam.

1/1
S

Steam

BestOfficialIn stock

Vaccine · Region US · Jul 5

$3.99

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

1 observations
Low $3.99
Best observed priceAll-time low

All-time low

$3.99

Jul 5, 2026 · Steam

12-week avg

$3.99

1 recent observations

Current vs low

At low

Current $3.99

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 Vaccine cheapest right now?

Vaccine is currently indexed at $3.99 from Steam. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.

What is the historical low for Vaccine?

The indexed low for Vaccine is $3.99 from Steam, observed Jul 5, 2026. The current indexed price is at that low, so KeyDwarf labels it "At indexed low".

Is the top source safe?

Steam 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?

Vaccine has a best indexed review signal of 67%.

Can KeyDwarf notify me about a lower price?

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