Lonely Mountains: Downhill is a meditative, relaxing, speedrunning game. The sound design in particular is both minimalist and exemplary. Slowly pedaling past babbling brooks and cooing doves, through dusty canyons, or atop foggy mountain peaks, the gorgeously lit low-poly dioramas consistently evoke the peace and grandeur of the natural world. However, if the player chooses to push themselves to maximize speed and precision, this game can be an intense and demanding experience with an incredibly high skill ceiling. What really elevates the experience is the flexibility of the challenges, which allow the player to set their own difficulty to perfectly match their mood. While the physics and collision do occasionally create unexpected obstacles, most of the time the meticulously designed courses present exacting, satisfying challenges. This game is a masterpiece.