How many copies did NS2: Combat sell?

17k to 28k copies, based on its 303 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did NS2: Combat make?

NS2: Combat is free to play, so there is no copy-sales revenue to estimate.

Copies are estimated from the public review count, adjusted for release year, and cross-checked against SteamSpy's own estimate.

We don't have enough similar games to place NS2: Combat in its genre yet. The numbers above are NS2: Combat's own.

Sizing up your own game? See how many copies games in its genre usually sell before you build it.