How much revenue did Eon Altar make?

Eon Altar is free to play, so there is no copy-sales revenue to estimate.

How many copies did Eon Altar sell?

Q: How many copies did Eon Altar sell?

33k to 54k copies, based on its 793 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 33k–54k; from 793 reviews (Very 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 Eon Altar and predicted how it would do from its 8 similar games. Every figure here, including Eon Altar's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 3.1M–10.2M

best case 18.7M (Brawlhalla)

Games like Eon Altar

A typical game among these

≈ 3.1M–10.2M copies

≈ $10.9M–$32.6M after Steam's cut

from ~105k reviews

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

6 of the 8 similar games are hits.

No genre covers most of these similar games. The closest is 4 Player Local (3 of 8), so its genre is hard to place.

Of the 416 indie games that passed 1,000 reviews in 2022, 11.8% were novel genre mixes and 88.2% stuck to an established genre. Published indie market research.

Best case: Brawlhalla at ≈ 14.2M–23.1M copies.

What their first month looked like

About half the games that made it here had over 9 reviews in their first month; the range was 7 to 528.

Games with under about 100 reviews in month one almost never recover.

The genre you'd be entering

These games: The similar games share 4 Player Local (3 of 8) and Co-op (3 of 8).
The winners: Winners here lead with Fighting + 2D Fighter.
When they shipped: The similar games span 2012 to 2025, 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 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
Brawlhalla 2017	Est. copies ≈ 14.2M–23.1M 3.9x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	413k reviews Mostly Positive	Free to PlayMultiplayer
Gang Beasts 2017	Est. copies ≈ 2.3M–3.8M SteamSpy 2M–5M	Est. revenue $12.8M–$34.4M after Steam's cut $23.2M–$52.9M before Steam's cut	$19.99	68k reviews Very Positive	FunnyPhysics
Stick Fight: The Game 2017	Est. copies ≈ 4.3M–7.0M SteamSpy 2M–5M	Est. revenue $5.9M–$15.9M after Steam's cut $10.8M–$24.5M before Steam's cut	$4.99	125k reviews Very Positive	MultiplayerFunny
Castle Crashers® 2012	Est. copies ≈ 8.9M–14.5M SteamSpy 5M–10M	Est. revenue $36.7M–$98.7M after Steam's cut $66.8M–$151.9M before Steam's cut	$14.99	141k reviews Overwhelmingly Positive	2DOnline Co-Op
Overcooked! 2 2018	Est. copies ≈ 2.6M–4.2M SteamSpy 2M–5M	Est. revenue $17.7M–$47.5M after Steam's cut $32.1M–$73.1M before Steam's cut	$24.99	85k reviews Very Positive	MultiplayerOnline Co-Op
Knighted 2021	Est. copies ≈ 595–967 too small to compare SteamSpy under 20k	Est. revenue Free	Free	24 reviews Positive	Turn-Based Tactics Puzzle
Hex Gambit: Respawned 2024	Est. copies ≈ 273–443 too small to compare SteamSpy under 20k	Est. revenue $1k–$3k after Steam's cut $2k–$5k before Steam's cut	$14.99	11 reviews Positive	3DTurn-Based Tactics
Sunderfolk 2025	Est. copies ≈ 57k–93k SteamSpy 20k–50k	Est. revenue $785k–$2.1M after Steam's cut $1.4M–$3.2M before Steam's cut	$49.99	2k reviews Very Positive	Tactical RPGFantasy