How many copies did Modern Arena sell?

198 to 322 copies, based on its 8 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Modern Arena make?

Modern Arena is free to play, so there is no copy-sales revenue to estimate.

Estimated players who have it: ≈ 198–322; from 8 reviews (8 user reviews); Only 8 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.

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

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