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

57k to 93k 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: ≈ 57k–93k; 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) 11.9M–22.9M

best case 85.4M (Garry's Mod)

The Sandbox genre

All 8 of your similar games are hits. A big, proven 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

≈ 11.9M–22.9M copies

≈ $91.5M–$205.1M after Steam's cut

from ~303k reviews

Best case

≈ 65.1M–105.7M copies

Garry's Mod · ≈ $178.7M–$480.5M 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, a genre with a long track record.

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

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Wallpaper Engine 2018	Est. copies ≈ 30.5M–49.6M 3.3x vs typical SteamSpy 20M–50M	Est. revenue $41.9M–$112.5M after Steam's cut $76.1M–$173.1M before the cut	$4.99	1.0M reviews Overwhelmingly Positive	MatureUtilities
Garry's Mod 2006	Est. copies ≈ 65.1M–105.7M 4.1x vs typical SteamSpy 20M–50M	Est. revenue $178.7M–$480.5M after Steam's cut $324.9M–$739.2M before the cut	$9.99	1.3M reviews Overwhelmingly Positive	SandboxModdable
Don't Starve Together 2016	Est. copies ≈ 21.6M–35.1M 1.8x vs typical SteamSpy 10M–20M	Est. revenue $88.9M–$239.1M after Steam's cut $161.7M–$367.9M before the cut	$14.99	539k reviews Very Positive	SurvivalOpen World Survival Craft
Human Fall Flat 2016	Est. copies ≈ 9.0M–14.7M SteamSpy 10M–20M	Est. revenue $49.6M–$133.4M after Steam's cut $90.2M–$205.2M before the cut	$19.99	226k reviews Very Positive	Co-opFunny
People Playground 2019	Est. copies ≈ 9.1M–14.8M SteamSpy 5M–10M	Est. revenue $24.9M–$67.1M after Steam's cut $45.4M–$103.2M before the cut	$9.99	315k reviews Overwhelmingly Positive	SandboxGore
BeamNG.drive 2015	Est. copies ≈ 18.8M–30.6M SteamSpy 5M–10M	Est. revenue $129.2M–$347.5M after Steam's cut $235.0M–$534.6M before the cut	$24.99	405k reviews Overwhelmingly Positive	SimulationDriving
VRChat 2017	Est. copies ≈ 9.1M–14.9M SteamSpy 20M–50M	Est. revenue Free	Free	266k reviews Mostly Positive	VRFree to Play
Cities: Skylines 2015	Est. copies ≈ 13.5M–21.9M SteamSpy 10M–20M	Est. revenue $111.2M–$298.9M after Steam's cut $202.2M–$459.9M before the cut	$29.99	291k reviews Very Positive	City Builder Simulation