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 $564.5K — a different platform, not this one.

Alien Shooter

Sinister hordes of bloodthirsty aliens have infiltrated our world! Take on the role of a soldier and head to a secret military laboratory to end this invasion! You'll have a ragtag arsenal at your disposal, everything from pistols to with machine-guns and high-caliber blasters. Keep your eyes open: you never know what's waiting around the corner...