Steam
BestOfficialIn stockLAMBDA end THEORY · Region US · Jul 10
$3.99
LAMBDA end THEORY
LAMBDA end THEORY is a cryptic and minimalist RPG. Play as LAMBDA, a strange chara in search of freedom. Discover SUSTEMA and unlock the secret of the mysterious Architect!
OfficialMar 8, 2022 · PixleavesIndieRPGCamera ComfortDualSense Controller SupportDualShock Controller SupportWindows
Current best
$3.99
at Steam · Jul 10
All-time low
$3.99
Jul 10, 2026
Stores tracked
1
sources indexed
Review signal
71%
7 reviews
Current best · Steam
$3.99
Observed Jul 10
View best listingCurrent 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
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 observationsBest observed priceAll-time low
All-time low
$3.99
Jul 10, 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
11 indexedCommon Questions
Where is LAMBDA end THEORY cheapest right now?
LAMBDA end THEORY 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 LAMBDA end THEORY?
The indexed low for LAMBDA end THEORY is $3.99 from Steam, observed Jul 10, 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?
LAMBDA end THEORY has a best indexed review signal of 71%.
Can KeyDwarf notify me about a lower price?
Use the alert target control on this page to save a watch target after sign-in.