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 $25.3K — a different platform, not this one.

Operation Serpens

Operation Serpens is a fast-paced action game inspired by the nostalgic arcade shooters and action movies of the past and refined into a real adrenaline-pumping VR experience. Join the unit of elite soldiers and choose your preferred gun to take down the ranks of the evil Snakes Organization to the very top. Whether you prefer to tank with a riot shield, headshot Snakes from a distance, or just charge in guns blazing, justice will be served. Whether you prefer to operate as a solo operator or as a part of a coop team, just remember sometimes to dodge the vast amounts of incoming bullets in order to not fail your mission. Play the single player campaign, zombie survival mode, and co-op maps with up to four players, each mission bringing something new into play. So enlist now, pick your mission, and let the bullet-time flashbangs roll on the floor! Key Features * Single player campaign story with handcrafted levels and many beautiful environments. * Masses of enemies, lots of bullets