To turn the project from a test scene into a game, I added menus, settings and a car collection. The interface is available in Turkish and English.
Before a run you pick your car in the garage. There are 29 cars in total: sedans, pickups, a police car, a fire truck, tractors, race cars and more. Only 3 are unlocked at the start.
Locked cars show up as a black silhouette with "???". When each car unlocks is a secret; there is no level bar for the player to watch.
Every time you reach the summit a gift box drops in, shakes and bursts into confetti, revealing a random new car. Cars are purely cosmetic: they all drive the same, so nobody gets an advantage.