No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $3K — a different platform, not this one.

Blake Stone: Planet Strike

The thinking man's 3D adventure!     Welcome to the 22nd century! The future is here and the ingenious Dr. Goldfire threatens to unleash unspeakable evil on the galaxy. This brilliant bio-scientist has developed an army of military mutants through his ghoulish genetic research. Poised for attack, Goldfire's hideous horde awaits his command to unravel the universe!   Only you, as Blake Stone, the galaxy's most invincible agent, have the brains and brawn to kick them out of the cosmos. Infiltrate Goldfire's secret fortress on a remote planet and battle the most horrific creatures ever to see the light of day. This mind-bending mission features new mutant-bashing weapons! Blast through doors with your anti-plasma cannon! Fry the freaks with a fission detonator! And stockpile blastable ammo to take out four new bosses and alien-like guards! But beware! Blake must beef up his brainpower too as he matches wits with the shrewdest enemies ever to prowl the planets. Whether cloaked in disguising haze or masquerading as statues, these fiends have smarts that could sink a lesser Stone! Get ready for orbit as you launch the new galactic mission that will make or break Blake... Planet Strike! Features   Advanced, faster version of the Wolfenstein™ engine 20 danger-packed levels, each with a specific goal Auto-mapper with multi-zoom modes detects hidden areas 24 genetically superior, military mutants and armed personnel 10 hazards, including turrets, spikes, SeekerBombs, crushing columns, acid slime, exploding ammo, and more! Four bosses, a super boss, plus cloaked and morphing enemies! 7 killer weapons, and a plasma cannon that blasts through doors Dramatic, heart-racing soundtrack and digital sound effects