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 $174.1K — a different platform, not this one.

Know by heart

“Know by heart...” is a game about accepting loss. The plot, the music, the intuitive gameplay and atmospheric mini-games work together to weave an illusion of briefly returning to one’s childhood and inevitably growing up, the feeling of time slipping through our fingers. Players will be immersed into the quiet life of a provincial Russian town, where traces and echoes of the Soviet era can still be seen and heard. Misha, the protagonist, is stuck in his monotonous, dead-end job, until one day the routine is shattered as his school crush returns to town. For the first time in years Misha regains hope of escaping the ennui of his daily life. A brief but tumultuous episode of the town’s life is interwoven with the story of a gang of childhood friends coming back together. It’s up to them to journey down memory lanes and rekindle their friendship, but their memories of the past and the very bonds between them become threatened... Features ~5 hours of sentimental adventure The atmosphere of a post-Soviet provincial town at the turn of the century An emotional plot with non-linear elements and several endings Game mechanics representing thoughts and memories of the protagonist A collection of evocative mini-games Piano soundtrack composed in modern neoclassical style