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 owners: ≈ 42k–68k; from 2k 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 NERTS! Online out and predicted the genre from its 6 similar games. Every figure here, including NERTS! Online's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 12k–19k

best case 223k (Yi Xian: The Cultivation Card Game)

Games like NERTS! Online

The middle of these games

≈ 12k–19k copies

≈ $36k–$71k after Steam's cut

from ~411 reviews

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

2 of your 6 similar games are hits.

Best case: Yi Xian: The Cultivation Card Game at ≈ 170k–276k copies. A breakout hit, far above a typical game.

What it took to get here

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

The genre you'd be entering

Your set: Your set clusters on 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.
The era: Only 1 of your 6 similar games shipped in the last two years. That says more about your picks than about the market, so add newer similar games to read the timing.

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 ≈ 170k–276k 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–212k 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 the cut	$3.99	326 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 ≈ 13k–22k SteamSpy under 20k	Est. revenue $48k–$129k after Steam's cut $87k–$199k before the cut	$12.99	467 reviews Very Positive	DeckbuildingStrategy
斗地主少女在线版 2023	Est. copies ≈ 9k–14k SteamSpy 50k–100k	Est. revenue Free	Free	354 reviews Mixed	CasualCard Game