How many copies did Under Observation sell?

347 to 564 copies, based on its 14 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Under Observation make?

Under Observation is free to play, so there is no copy-sales revenue to estimate.

How big is Under Observation?

Estimated players who have it: ≈ 347–564; from 14 reviews (Mostly Positive)

Copies are estimated from the public review count, adjusted for release year, and cross-checked against SteamSpy's own estimate.

Did the prediction match what actually happened?

We hid Under Observation and predicted how it would do from its 8 similar games. Every figure here, including Under Observation's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 111k–134k

best case 1.3M (Unpacking)

Games like Under Observation

A typical game among these

≈ 111k–134k copies

≈ $122k–$818k after Steam's cut

from ~4k reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

All 8 of the similar games are hits.

Best case: Unpacking at ≈ 1.0M–1.7M copies, ≈ $5.6M–$15.1M after Steam's cut. It is a breakout hit, far above a typical game.

What their first month looked like

About half the games that made it here had over 630 reviews in their first month; the range was 233 to 4k.

The genre you'd be entering

These games: The similar games share Puzzle (7 of 8) and Simulation (6 of 8).
The winners: Winners here lead with Puzzle + Story Rich, priced around $20. The breakout hits carry Pixel Graphics + Story Rich + Relaxing; a typical game here doesn't.
When they shipped: The similar games span 2014 to 2024, and 2 of the 8 shipped in the last two years.

How these numbers were worked out

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

Copies come from each game's reviews times a sales-per-review rate that falls with release age, from about 31 for the most recent game here to about 70 for the oldest, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
[Chilla's Art] The Closing Shift \| 閉店事件 2022	Est. copies ≈ 80k–130k SteamSpy 50k–100k	Est. revenue $132k–$354k after Steam's cut $239k–$544k before Steam's cut	$5.99	3k reviews Very Positive	AdventureSimulation
Unpacking 2021	Est. copies ≈ 1.0M–1.7M 12x vs typical SteamSpy 500k–1M	Est. revenue $5.6M–$15.1M after Steam's cut $10.2M–$23.2M before Steam's cut	$19.99	41k reviews Very Positive	RelaxingCute
I Expect You To Die 2017	Est. copies ≈ 96k–156k SteamSpy 200k–500k	Est. revenue $658k–$1.8M after Steam's cut $1.2M–$2.7M before Steam's cut	$24.99	3k reviews Very Positive	VRPuzzle
SchoolBoy Runaway 2024	Est. copies ≈ 97k–158k SteamSpy 50k–100k	Est. revenue $53k–$143k after Steam's cut $97k–$220k before Steam's cut	$1.99	4k reviews Very Positive	PuzzleAdventure
Morphopolis 2014	Est. copies ≈ 272k–441k SteamSpy 500k–1M	Est. revenue $298k–$801k after Steam's cut $542k–$1.2M before Steam's cut	$3.99	5k reviews Very Positive	PuzzleIndie
LEGO® Builder's Journey 2021	Est. copies ≈ 107k–174k SteamSpy 200k–500k	Est. revenue $589k–$1.6M after Steam's cut $1.1M–$2.4M before Steam's cut	$19.99	4k reviews Very Positive	IndieCute
Summon 2023	Est. copies ≈ 89k–144k SteamSpy 50k–100k	Est. revenue $24k–$65k after Steam's cut $44k–$100k before Steam's cut	$0.99	4k reviews Very Positive	SimulationMemes
Platform 8 2024	Est. copies ≈ 72k–116k SteamSpy 100k–200k	Est. revenue $79k–$211k after Steam's cut $143k–$325k before Steam's cut	$3.99	3k reviews Very Positive	Psychological HorrorAdventure