How many copies did UKI-UKI-TENGOKU2 sell?

223 to 363 copies, based on its 9 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did UKI-UKI-TENGOKU2 make?

UKI-UKI-TENGOKU2 is free to play, so there is no copy-sales revenue to estimate.

How big is UKI-UKI-TENGOKU2?

Estimated owners: ≈ 223–363; from 9 reviews (9 user reviews); Thin evidence: 9 reviews. That range swings on one or two people, so read it as a hint, not a measurement.

A labeled estimate from the public review count (adjusted for release year), not exact sales. Owner data cross-checked with SteamSpy.

Does this actually work?

We left UKI-UKI-TENGOKU2 out and predicted the genre from its 8 similar games. Every figure here, including UKI-UKI-TENGOKU2's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 19k–28k

best case 157k (Really Big Sky)

Games like UKI-UKI-TENGOKU2

The middle of these games

≈ 19k–28k copies

≈ $49k–$89k after Steam's cut

from ~326 reviews

Only the top fifth of 2019’s Steam releases earned about $34k gross, so plan for that or less.

2 of your 8 similar games are hits.

Your picks lean toward this genre's biggest survivors; the typical figure reads from its ordinary successes.

Best case: Really Big Sky at ≈ 119k–194k copies, ≈ $164k–$441k after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Bullet Hell (8 of 8) and Shoot 'Em Up (8 of 8).
The winners: Winners here lead with Bullet Hell + Shoot 'Em Up, priced around $10. The breakout hits carry Difficult; a typical game here doesn't.
The era: The games you compared span 2011 to 2018, and none of them 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 38 for the most recent game here to about 79 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
Rise & Shine 2017	Est. copies ≈ 31k–51k 2.8x vs typical SteamSpy 50k–100k	Est. revenue $86k–$231k after Steam's cut $156k–$356k before the cut	$9.99	910 reviews Mixed	Side Scroller2D Platformer
Sine Mora EX 2017	Est. copies ≈ 24k–39k 2.1x vs typical SteamSpy 50k–100k	Est. revenue $65k–$176k after Steam's cut $119k–$271k before the cut	$9.99	693 reviews Mixed	Side ScrollerShoot 'Em Up
Really Big Sky 2012	Est. copies ≈ 119k–194k 5.8x vs typical SteamSpy 200k–500k	Est. revenue $164k–$441k after Steam's cut $298k–$678k before the cut	$4.99	2k reviews Mostly Positive	IndieAction
Aircraft Evolution 2018	Est. copies ≈ 8k–13k SteamSpy 20k–50k	Est. revenue $20k–$53k after Steam's cut $36k–$81k before the cut	$8.99	260 reviews Very Positive	Side ScrollerFlight
SATAZIUS 2011	Est. copies ≈ 21k–33k SteamSpy 50k–100k	Est. revenue $34k–$91k after Steam's cut $62k–$140k before the cut	$5.99	326 reviews Very Positive	Shoot 'Em UpBullet Hell
REVOLVER360 RE:ACTOR 2014	Est. copies ≈ 23k–37k SteamSpy 50k–100k	Est. revenue $62k–$168k after Steam's cut $113k–$258k before the cut	$9.99	405 reviews Very Positive	Shoot 'Em UpBullet Hell
DARIUSBURST Chronicle Saviours 2015	Est. copies ≈ 40k–65k 2.5x vs typical SteamSpy 100k–200k	Est. revenue $551k–$1.5M after Steam's cut $1.0M–$2.3M before the cut	$49.99	821 reviews Very Positive	Shoot 'Em UpArcade
Jets'n'Guns Gold 2014	Est. copies ≈ 86k–139k 4.7x vs typical SteamSpy 200k–500k	Est. revenue $189k–$507k after Steam's cut $343k–$780k before the cut	$7.99	2k reviews Very Positive	Shoot 'Em UpGreat Soundtrack