How many copies did NERTS! Online sell?

42k to 68k copies, based on its 2k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did NERTS! Online make?

NERTS! Online is free to play, so there is no copy-sales revenue to estimate.

How big is NERTS! Online?

Estimated players who have it: ≈ 42k–68k; from 2k reviews (Overwhelmingly 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 NERTS! Online and predicted how it would do from its 6 similar games. Every figure here, including NERTS! Online's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 12k–19k

best case 224k (Yi Xian: The Cultivation Card Game)

Games like NERTS! Online

A typical game among these

≈ 12k–19k copies

≈ $37k–$72k after Steam's cut

from ~411 reviews

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

2 of the 6 similar games are hits.

Best case: Yi Xian: The Cultivation Card Game at ≈ 171k–278k copies. It is a breakout hit, far above a typical game.

What their first month looked like

About half the games that made it here had over 275 reviews in their first month; the range was 2 to 4k.

The genre you'd be entering

These games: The similar games share Solitaire (5 of 6) and Card Game (4 of 6).
The winners: Winners here lead with Solitaire. The breakout hits carry Free to Play + Card Battler + Turn-Based Tactics; a typical game here doesn't.
When they shipped: Only 1 of the 6 similar games shipped in the last two years. That says more about which games were found than about the market.

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 36 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
Yi Xian: The Cultivation Card Game 2024	Est. copies ≈ 171k–278k 17x vs typical SteamSpy 500k–1M	Est. revenue Free	Free	7k reviews Mostly Positive	Free to PlayCard Battler
Poker Master - Texas Hold'em, Roulette, Blackjack, Baccarat, Omaha, Slots, Teen Patti, Mahjong, Landlord, Showhand, Bullfighting, Chinese poker 2020	Est. copies ≈ 131k–214k 13x vs typical SteamSpy 20k–50k	Est. revenue Free	Free	5k reviews Very Positive	Free to PlaySolitaire
Cat Lady - The Card Game 2019	Est. copies ≈ 9k–15k SteamSpy under 20k	Est. revenue $10k–$28k after Steam's cut $19k–$43k before Steam's cut	$3.99	327 reviews Very Positive	CasualStrategy
斗牌魂 2023	Est. copies ≈ 16k–26k 1.6x vs typical SteamSpy 100k–200k	Est. revenue Free	Free	649 reviews Mixed	CasualStrategy
Mystic Vale 2019	Est. copies ≈ 14k–22k SteamSpy under 20k	Est. revenue $48k–$130k after Steam's cut $88k–$200k before Steam's cut	$12.99	469 reviews Very Positive	DeckbuildingStrategy
斗地主少女在线版 2023	Est. copies ≈ 9k–14k SteamSpy 50k–100k	Est. revenue Free	Free	353 reviews Mixed	CasualCard Game