How many copies did Kill It With Fire: HEATWAVE sell?

54k to 87k copies, based on its 2k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Kill It With Fire: HEATWAVE make?

Kill It With Fire: HEATWAVE is free to play, so there is no copy-sales revenue to estimate.

How big is Kill It With Fire: HEATWAVE?

Estimated owners: ≈ 54k–87k; from 2k reviews (Very 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 Kill It With Fire: HEATWAVE out and predicted the genre from its 8 similar games. Every figure here, including Kill It With Fire: HEATWAVE's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 12.2M–24.7M

best case 104.7M (Garry's Mod)

Games like Kill It With Fire: HEATWAVE

The middle of these games

≈ 12.2M–24.7M copies

≈ $95.5M–$216.6M after Steam's cut

from ~305k 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: Garry's Mod at ≈ 79.8M–129.6M copies, ≈ $219.1M–$589.2M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Sandbox (5 of 8) and Physics (4 of 8).
The winners: Winners here lead with First-Person, priced around $7. The breakout hits carry First-Person + Mature + Utilities; a typical game here doesn't.
The era: The games you compared span 2006 to 2019, and none of them 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 36 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
Wallpaper Engine 2018	Est. copies ≈ 30.8M–50.0M 3.3x vs typical SteamSpy 20M–50M	Est. revenue $42.2M–$113.5M after Steam's cut $76.8M–$174.6M before the cut	$4.99	1.0M reviews Overwhelmingly Positive	MatureUtilities
Garry's Mod 2006	Est. copies ≈ 79.8M–129.6M 4.1x vs typical SteamSpy 20M–50M	Est. revenue $219.1M–$589.2M after Steam's cut $398.4M–$906.5M before the cut	$9.99	1.3M reviews Overwhelmingly Positive	SandboxModdable
Don't Starve Together 2016	Est. copies ≈ 22.6M–36.7M 1.8x vs typical SteamSpy 10M–20M	Est. revenue $93.0M–$250.0M after Steam's cut $169.0M–$384.6M before the cut	$14.99	542k reviews Very Positive	SurvivalOpen World Survival Craft
Human Fall Flat 2016	Est. copies ≈ 9.4M–15.3M SteamSpy 10M–20M	Est. revenue $51.8M–$139.3M after Steam's cut $94.2M–$214.2M before the cut	$19.99	226k reviews Very Positive	Co-opFunny
People Playground 2019	Est. copies ≈ 9.1M–14.9M SteamSpy 5M–10M	Est. revenue $25.1M–$67.5M after Steam's cut $45.7M–$103.9M before the cut	$9.99	317k reviews Overwhelmingly Positive	SandboxGore
BeamNG.drive 2015	Est. copies ≈ 20.3M–33.0M SteamSpy 5M–10M	Est. revenue $139.6M–$375.3M after Steam's cut $253.8M–$577.4M before the cut	$24.99	416k reviews Overwhelmingly Positive	SimulationDriving
VRChat 2017	Est. copies ≈ 9.2M–15.0M SteamSpy 20M–50M	Est. revenue Free	Free	268k reviews Mostly Positive	VRFree to Play
Cities: Skylines 2015	Est. copies ≈ 14.2M–23.1M SteamSpy 10M–20M	Est. revenue $117.4M–$315.8M after Steam's cut $213.5M–$485.8M before the cut	$29.99	292k reviews Very Positive	City Builder Simulation