How much revenue did DOOM + DOOM II make?

$5.0M–$13.5M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did DOOM + DOOM II sell?

Q: How many copies did DOOM + DOOM II sell?

1.8M to 3.0M copies, based on its 29k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 1.8M–3.0M; $5.0M–$13.5M after Steam's cut $9.1M–$20.8M before the cut; from 29k reviews (Overwhelmingly Positive)

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

Copies, estimated from reviews

typical (middle half) 9.1M–17.8M

best case 23.1M (Half-Life 2)

Games like DOOM + DOOM II

The middle of these games

≈ 9.1M–17.8M copies

≈ $58.0M–$91.2M after Steam's cut

from ~212k 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: Half-Life 2 at ≈ 17.6M–28.6M copies, ≈ $48.3M–$130.0M after Steam's cut.

The genre you'd be entering

Your set: Your set clusters on First-Person (5 of 8) and FPS (5 of 8).
The winners: Winners here lead with FPS + Sci-fi, priced around $10.
The era: The games you compared span 1998 to 2020, 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
Grand Theft Auto IV: Complete Edition unreleased	Est. copies ≈ 5.0M–8.1M SteamSpy 20M–50M	Est. revenue Free	Free	202k reviews Very Positive	Open WorldAction
Half-Life 1998	Est. copies ≈ 10.3M–16.8M SteamSpy 10M–20M	Est. revenue $28.4M–$76.4M after Steam's cut $51.6M–$117.5M before the cut	$9.99	164k reviews Overwhelmingly Positive	FPSClassic
Half-Life 2 2004	Est. copies ≈ 17.6M–28.6M SteamSpy 10M–20M	Est. revenue $48.3M–$130.0M after Steam's cut $87.9M–$200.0M before the cut	$9.99	278k reviews Overwhelmingly Positive	FPSAction
Halo: The Master Chief Collection 2019	Est. copies ≈ 7.5M–12.3M SteamSpy 5M–10M	Est. revenue $83.0M–$223.2M after Steam's cut $150.9M–$343.3M before the cut	$39.99	262k reviews Very Positive	Great SoundtrackFPS
Portal 2007	Est. copies ≈ 12.5M–20.4M SteamSpy 10M–20M	Est. revenue $34.5M–$92.6M after Steam's cut $62.6M–$142.5M before the cut	$9.99	198k reviews Overwhelmingly Positive	PuzzlePuzzle-Platformer
Grand Theft Auto IV: The Complete Edition 2020	Est. copies ≈ 5.0M–8.1M SteamSpy 5M–10M	Est. revenue $27.6M–$74.1M after Steam's cut $50.1M–$114.0M before the cut	$19.99	202k reviews Very Positive	Open WorldAction
Counter-Strike 2000	Est. copies ≈ 16.5M–26.8M SteamSpy 10M–20M	Est. revenue $45.4M–$122.0M after Steam's cut $82.5M–$187.7M before the cut	$9.99	261k reviews Overwhelmingly Positive	ActionFPS
DOOM 2016	Est. copies ≈ 9.2M–15.0M SteamSpy 5M–10M	Est. revenue $50.6M–$136.0M after Steam's cut $92.0M–$209.3M before the cut	$19.99	221k reviews Overwhelmingly Positive	FPSGore