How much revenue did Portal 2 make?

$80.8M–$217.4M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Portal 2 sell?

Q: How many copies did Portal 2 sell?

29.4M to 47.8M copies, based on its 466k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 29.4M–47.8M; $80.8M–$217.4M after Steam's cut $147.0M–$334.4M before the cut; from 466k 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 Portal 2 out and predicted the genre from its 8 similar games. Every figure here, including Portal 2's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 310k–1.9M

best case 16.5M (Portal)

Games like Portal 2

The middle of these games

≈ 310k–1.9M copies

≈ $11.4M–$25.2M after Steam's cut

from ~12k 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: Portal at ≈ 12.5M–20.4M copies, ≈ $34.5M–$92.6M after Steam's cut.

The genre you'd be entering

Your set: Your set clusters on First-Person (7 of 8) and Puzzle (6 of 8).
The winners: Winners here lead with Puzzle + Puzzle-Platformer, priced around $10.
The era: The games you compared span 2007 to 2024, and 1 of your 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 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
Portal 2007	Est. copies ≈ 12.5M–20.4M 16x vs typical 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
BEEP 2011	Est. copies ≈ 296k–480k SteamSpy 500k–1M	Est. revenue Free	Free	5k reviews Very Positive	IndiePlatformer
Mirror's Edge™ 2009	Est. copies ≈ 2.5M–4.0M 3.2x vs typical SteamSpy 2M–5M	Est. revenue $13.7M–$36.7M after Steam's cut $24.8M–$56.5M before the cut	$19.99	39k reviews Very Positive	Action-AdventureParkour
Polarity 2016	Est. copies ≈ 194k–316k SteamSpy 500k–1M	Est. revenue $694k–$1.9M after Steam's cut $1.3M–$2.9M before the cut	$12.99	5k reviews Mostly Positive	PuzzleFirst-Person
Gravitas 2019	Est. copies ≈ 206k–334k SteamSpy 200k–500k	Est. revenue Free	Free	7k reviews Overwhelmingly Positive	Free to PlayPuzzle
Antichamber 2013	Est. copies ≈ 1.1M–1.8M SteamSpy 1M–2M	Est. revenue $6.2M–$16.6M after Steam's cut $11.2M–$25.5M before the cut	$19.99	18k reviews Overwhelmingly Positive	PuzzleFirst-Person
Indiana Jones and the Great Circle 2024	Est. copies ≈ 506k–823k 1.6x vs typical SteamSpy 200k–500k	Est. revenue $9.7M–$26.2M after Steam's cut $17.7M–$40.3M before the cut	$69.99	20k reviews Very Positive	Action-AdventureFirst-Person
NaissanceE 2014	Est. copies ≈ 247k–401k SteamSpy 200k–500k	Est. revenue Free	Free	4k reviews Very Positive	ExplorationIndie