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TIS-100

TIS-100 is an open-ended programming game by Zachtronics, the creators of SpaceChem and Infinifactory, in which you rewrite corrupted code segments to repair the TIS-100 and unlock its secrets. It’s the assembly language programming game you never asked for!

OfficialJul 20, 2015 · ZachtronicsIndieSimulationFamily SharingIncludes level editorSingle-playerWindows · Mac · Linux

Current best

$6.99

at GOG · Jul 9

All-time low

$3.49

Jun 20, 2026

Stores tracked

2

sources indexed

Review signal

97%

4,088 reviews

TIS-100 cover

Current best · GOG

$6.99

Observed Jul 9

View best listing

Observed low target

$3.49 · based on the previous indexed low

KeyDwarf only tracks observations — checkout happens on the store.

Tracked Stores

Best indexed price $6.99 at GOG.

2/2
G

GOG

BestOfficialIn stock

TIS-100 · Region US · Jul 9

$6.99

View listing
S

Steam

OfficialIn stock

TIS-100 · Region US · Jul 14

$6.99

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

4 observations
Low $3.49
Best observed priceAll-time low

All-time low

$3.49

Jun 20, 2026 · GOG

12-week avg

$5.24

4 recent observations

Current vs low

+100%

Current $6.99

Recommendation

Watch for drop

consider setting an alert

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

Media

12 indexed

Common Questions

Where is TIS-100 cheapest right now?

TIS-100 is currently indexed at $6.99 from GOG. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.

What is the historical low for TIS-100?

The indexed low for TIS-100 is $3.49 from GOG, observed Jun 20, 2026. The current indexed price is 100% above that low, so KeyDwarf labels it "Watch for drop".

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?

TIS-100 has a best indexed review signal of 97%.

Can KeyDwarf notify me about a lower price?

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