How big is the Tower defense market on Steam?

A typical Tower defense game sells under 20k copies, and the top decile 100k to 200k, based on the 2,133 games SteamSpy lists for the tag (its visible subset). Labeled estimates from review counts, not exact sales.

The realistic ceiling for Tower defense games

Two honest views of what Tower defense games do on Steam: the whole market from a systematic sample, and the games gathered here. Kept separate on purpose.

The market

A typical game sells

≈ under 20k copies

under $70k after Steam's cut, est.

The top decile

≈ 100k–200k copies

$349k–$699k after Steam's cut, est.

Half the reviews in SteamSpy's sample of 2,133 Tower defense games sit with 6 of them.

Based on the 2,133 Tower defense games SteamSpy lists, its visible subset, not the whole market. Games are grouped by the tags players give them, which are applied loosely, so a genre's edges are fuzzy. Owners are SteamSpy estimates from review counts, not exact sales.

The Tower defense games gathered on wishvane

Across the 325 Tower defense games compared here, a typical one runs ≈ 39k–72k copies (est.), with Bloons TD 6 the biggest comparable game at ≈ 11.9M–19.3M. A small, self-selected sample, not the whole market.

The Tower defense games gathered here span 2008 to 2026, a long track record.
Across the Tower defense games gathered here the median price is $9.99, and the biggest charge more, around $15.

and 265 more

Building a Tower defense game? This genre already ran your experiment. Add the games yours will be compared to and see what's realistic, before you spend months on it.