No revenue estimate for PSN — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $29K — a different platform, not this one.

Project Root

Paying homage to the classic SHMUP, Project Root throws players into the front lines of the rebellion to battle against a never ending collection of enemy aircraft, swarms of missile attacks, legions of tanks and engage in frenetic boss battles to strike at the root of the evil Prometheus Corp. Combatants have access to a plethora of ship upgrades, an arsenal of exploding, homing missiles, Cluster Rockets and gigantic lasers to bolster defenses. Purchasing this content entitles you to both the PS4™ and “PS Vita” versions! Video output in Full HD 1080p requires 1080p native display. 1 player DUALSHOCK®4 1080p HD Video Output Software subject to license (us.playstation.com/softwarelicense).  Online activity subject to Terms of Services and User Agreement (www.sonyenteretainmentnetwork.com/terms-of-service). One-time license fee for play on account’s designated primary PS4™ system and other PS4™ systems when signed in with that account. ™ & © 2015 Reverb Communications, Inc.