How many copies did Russian Fishing 4 sell?

2.2M to 3.6M copies, based on its 88k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Russian Fishing 4 make?

Russian Fishing 4 is free to play, so there is no copy-sales revenue to estimate.

How big is Russian Fishing 4?

Estimated owners: ≈ 2.2M–3.6M; from 88k reviews (Mixed)

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 Russian Fishing 4 out and predicted the genre from its 8 similar games. Every figure here, including Russian Fishing 4's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 860k–1.1M

best case 16.9M (Path of Exile)

The Open World genre

All 8 of your similar games are hits. A healthy genre for a game like yours.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game

≈ 860k–1.1M copies

≈ $2.4M–$9.2M after Steam's cut

from ~16k reviews

Best case

≈ 12.9M–20.9M copies

Path of Exile

A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Open World (3 of 8) and Simulation (3 of 8).
The winners: Winners here lead with Fishing + Simulation, priced around $10. The breakout hits carry Massively Multiplayer + MMORPG; a typical game here doesn't.
The era: None of the games you compared shipped in the last two years; the newest is from 2017. That says more about your picks than about the market, so add newer similar games to read the timing.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Fishing Planet 2017	Est. copies ≈ 2.6M–4.3M 4.7x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	76k reviews Very Positive	FishingFree to Play
Garfield Kart 2015	Est. copies ≈ 656k–1.1M SteamSpy 500k–1M	Est. revenue $900k–$2.4M after Steam's cut $1.6M–$3.7M before the cut	$4.99	14k reviews Very Positive	Cult ClassicCombat Racing
Path of Exile 2013	Est. copies ≈ 12.9M–20.9M 15x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	248k reviews Very Positive	Free to PlayDark Fantasy
PickCrafter 2017	Est. copies ≈ 246k–399k SteamSpy 500k–1M	Est. revenue Free	Free	7k reviews Very Positive	MiningIdler
Black Desert 2017	Est. copies ≈ 3.2M–5.2M 5.7x vs typical SteamSpy 5M–10M	Est. revenue $8.8M–$23.8M after Steam's cut $16.1M–$36.6M before the cut	$9.99	94k reviews Mostly Positive	MMORPGMassively Multiplayer
Feed and Grow: Fish 2016	Est. copies ≈ 855k–1.4M SteamSpy 500k–1M	Est. revenue $3.5M–$9.5M after Steam's cut $6.4M–$14.6M before the cut	$14.99	21k reviews Mostly Positive	SimulationUnderwater
Cat Goes Fishing 2015	Est. copies ≈ 757k–1.2M SteamSpy 500k–1M	Est. revenue $1.5M–$3.9M after Steam's cut $2.6M–$6.0M before the cut	$6.99	16k reviews Very Positive	FishingCats
Microsoft Flight Simulator X: Steam Edition 2014	Est. copies ≈ 1.4M–2.2M 1.6x vs typical SteamSpy 2M–5M	Est. revenue $9.4M–$25.4M after Steam's cut $17.2M–$39.0M before the cut	$24.99	26k reviews Very Positive	FlightSimulation