How much revenue did Shillelagh make?

$545–$1k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Shillelagh sell?

Q: How many copies did Shillelagh sell?

397 to 645 copies, based on its 16 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 397–645; $545–$1k after Steam's cut $991–$2k before the cut; from 16 reviews (Mixed)

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

Copies, estimated from reviews

typical (middle half) 589k–1.3M

best case 7.9M (ULTRAKILL)

Games like Shillelagh

The middle of these games

≈ 589k–1.3M copies

≈ $4.9M–$6.1M after Steam's cut

from ~16k reviews

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

All 8 of your similar games are hits.

Best case: ULTRAKILL at ≈ 6.0M–9.7M copies, ≈ $49.4M–$132.9M after Steam's cut. A breakout hit, far above a typical game.

What it took to get here

About half the games that made it here had over 6k reviews in their first month; the spread ran 2k to 33k.

The genre you'd be entering

Your set: Your set clusters on FPS (8 of 8) and Shooter (6 of 8).
The winners: Winners here lead with Arena Shooter + FPS, priced around $30. The breakout hits carry Arena Shooter + Fast-Paced + Free to Play; a typical game here doesn't.
The era: The games you compared span 2004 to 2023, 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 31 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
Half-Life 2: Deathmatch 2004	Est. copies ≈ 969k–1.6M SteamSpy 10M–20M	Est. revenue Free	Free	15k reviews Very Positive	ActionFPS
Serious Sam 4 2020	Est. copies ≈ 438k–712k SteamSpy 1M–2M	Est. revenue $4.8M–$13.0M after Steam's cut $8.8M–$19.9M before the cut	$39.99	18k reviews Very Positive	ActionGore
Quake Champions 2022	Est. copies ≈ 967k–1.6M 2.4x vs typical SteamSpy 2M–5M	Est. revenue Free	Free	39k reviews Mostly Positive	Arena ShooterHero Shooter
Warhammer 40,000: Boltgun 2023	Est. copies ≈ 449k–729k SteamSpy 200k–500k	Est. revenue $2.7M–$7.3M after Steam's cut $4.9M–$11.2M before the cut	$21.99	18k reviews Very Positive	Boomer ShooterFPS
ULTRAKILL 2020	Est. copies ≈ 6.0M–9.7M 15x vs typical SteamSpy 5M–10M	Est. revenue $49.4M–$132.9M after Steam's cut $89.9M–$204.5M before the cut	$29.99	242k reviews Overwhelmingly Positive	Boomer ShooterFast-Paced
Quake 2007	Est. copies ≈ 1.0M–1.7M SteamSpy 1M–2M	Est. revenue $2.8M–$7.6M after Steam's cut $5.1M–$11.7M before the cut	$9.99	16k reviews Overwhelmingly Positive	FPSClassic
Quake Live 2014	Est. copies ≈ 889k–1.4M SteamSpy 2M–5M	Est. revenue $2.4M–$6.6M after Steam's cut $4.4M–$10.1M before the cut	$9.99	16k reviews Very Positive	FPSArena Shooter
Splitgate 2019	Est. copies ≈ 3.2M–5.2M 6.8x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	111k reviews Very Positive	Free to PlayFPS