How much revenue did Happy Z-Day make?

$123–$330 after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Happy Z-Day sell?

Q: How many copies did Happy Z-Day sell?

149 to 242 copies, based on its 6 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 149–242; $123–$330 after Steam's cut $223–$507 before Steam's cut; from 6 reviews (6 user reviews); Only 6 reviews so far, so that range swings on one or two people. Read it as a hint, not a measurement.

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 Happy Z-Day and predicted how it would do from its 8 similar games. Every figure here, including Happy Z-Day's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 155–24k

best case 614k (Plants vs. Zombies: Battle for Neighborville™)

Games like Happy Z-Day

A typical game among these

≈ 155–24k copies

≈ $169–$301k after Steam's cut

from ~89 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 8 similar games are hits.

Best case: Plants vs. Zombies: Battle for Neighborville™ at ≈ 468k–760k copies, ≈ $3.9M–$10.4M after Steam's cut.

What their first month looked like

About half the games that made it here had over 6 reviews in their first month; the range was 2 to 1k.

Games with under about 100 reviews in month one almost never recover.

The genre you'd be entering

These games: The similar games share Tower Defense (6 of 8) and Third-Person Shooter (5 of 8).
The winners: Winners here lead with Third-Person Shooter + Zombies, priced around $30.
When they shipped: The similar games span 2018 to 2024, and 3 of the 8 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 31 for the most recent game here to about 38 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
Plants vs. Zombies: Battle for Neighborville™ 2020	Est. copies ≈ 468k–760k 213x vs typical SteamSpy 1M–2M	Est. revenue $3.9M–$10.4M after Steam's cut $7.0M–$15.9M before Steam's cut	$29.99	19k reviews Mostly Positive	MultiplayerThird-Person Shooter
They Are Hundreds: Prepped 2023	Est. copies ≈ 273–443 SteamSpy 20k–50k	Est. revenue Free	Free	11 reviews Positive	ActionCasual
Blood Waves 2018	Est. copies ≈ 6k–10k 2.2x vs typical SteamSpy under 20k	Est. revenue $17k–$44k after Steam's cut $30k–$68k before Steam's cut	$9.99	198 reviews Mixed	ShooterBase-Building
Town Of The Dead Life 死寂之城 2021	Est. copies ≈ 4k–7k 1.9x vs typical SteamSpy 50k–100k	Est. revenue $7k–$18k after Steam's cut $12k–$28k before Steam's cut	$5.99	166 reviews Mixed	AdventureThird-Person Shooter
Dread Dawn 2024	Est. copies ≈ 56k–92k 26x vs typical SteamSpy 50k–100k	Est. revenue $310k–$834k after Steam's cut $564k–$1.3M before Steam's cut	$19.99	2k reviews Mostly Positive	ZombiesSurvival
All Noobs must die 2023	Est. copies ≈ 99–161 SteamSpy under 20k	Est. revenue $81–$219 after Steam's cut $148–$337 before Steam's cut	$2.99	4 reviews 4 user reviews	Tower DefenseAction
Apex Defenders 2024	Est. copies ≈ 124–202 SteamSpy under 20k	Est. revenue $102–$275 after Steam's cut $185–$423 before Steam's cut	$2.99	5 reviews 5 user reviews	ActionTower Defense
The Zombie Wave 2024	Est. copies ≈ 99–161 SteamSpy under 20k	Est. revenue $54–$146 after Steam's cut $99–$224 before Steam's cut	$1.99	4 reviews 4 user reviews	CasualAction