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 $26.8K — a different platform, not this one.

Zombo Buster Rising

Shoot zombies from a terrace like a boss! Zombo Buster Rising brings you a nostalgic experience of classic 2D side shooting-defense in the enhanced build! Zombo Buster Rising includes challenging achievements, two AI-Assisted NPCs, three super abilities, various upgrades and Survival mode. Basically it’s the best pick for any fan of casual zombie shooters with only one goal — to slay these undead hordes!