No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. Reviews and prices only.

Stargunner

Stargunner has 34 blast-a-thon levels. Blast your way through the dark reaches of space, navigate the hostile alien world of Zile and explore the wreckage-ridden depths of the enemy’s darkened waters. Features Into the Face of Danger : Fly through 34 action-packed levels as you take on the forces of Zile. Top Gun : Destroy enemy ships to earn power-ups and credits. It Pays to Slay : Spend credits on new weapons and engines - upgrade your ship. Fight in Flight : 75 enemy craft and 33 bosses ensure there’s no shortage of things to shoot at. Controller Support : Partial Xbox 360 Controller support.