Scrap Clicker 2 Upgrades

Scrap Clicker 2 Upgrades can stand for the following upgrades:
 * Scrap Upgrades (Payed with Scrap)
 * Magnet Upgrades (Payed with Magnets)
 * Brick Upgrades (x15 Stars, Payed with Bricks)
 * Tree Upgrades (x40 Stars, Payed with several currencies)
 * Tire Upgrades (x130 Stars, Payed with Tires)