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Celestia

A real-time 3D space simulator and interactive planetarium. Travel to any planet, moon, star, or galaxy and view it from any point in space and time. Accelerate time, land on alien worlds, and expand the universe with community-made add-ons.

OfficialJun 22, 2026 · Celestia Development TeamSimulationFamily SharingPlayable without Timed InputSingle-playerSteam WorkshopWindows

Current best

$1.99

at Steam · 36h ago

All-time low

$1.99

Jul 19, 2026

Stores tracked

1

sources indexed

Review signal

94%

16 reviews

Celestia cover

Current best · Steam

$1.99

Observed 36h ago

View best listing

Current low target

$1.99 · matches the current indexed low

KeyDwarf only tracks observations — checkout happens on the store.

Tracked Stores

Best indexed price $1.99 at Steam.

1/1
S

Steam

BestOfficialIn stock

Celestia · Region US · 36h ago

$1.99

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 $1.99
Best observed priceAll-time low

All-time low

$1.99

Jul 19, 2026 · Steam

12-week avg

$1.99

1 recent observations

Current vs low

At low

Current $1.99

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 Celestia cheapest right now?

Celestia is currently indexed at $1.99 from Steam. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.

What is the historical low for Celestia?

The indexed low for Celestia is $1.99 from Steam, observed Jul 19, 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?

Celestia has a best indexed review signal of 94%.

Can KeyDwarf notify me about a lower price?

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