Mega Currencies

There are two types of Mega Currencies in Scrap Clicker 2 (none in the other games): Mega Magnets, which were added in update 4.2 and Mega Tires, which were added in 8.2.

How to unlock them
Both mega currencies can be unlocked by purchasing Tree Upgrades. Mega Tires do not replace Mega Magnets.
 * Mega Magnets can be unlocked at x50 Stars
 * Mega Tires can be unlocked at x525 Stars

Effect
Both mega currencies spawn every 500 merges. Exactly every 500, not 0.2% like the upgrades say. After a mega currency has spawned, it can be tapped to make it explode into 50 magnets (Mega Magnets) or 15 tires (Mega Tires).
 * Each magnet is usually worth 1, this can be increased by leveling the Scrapyard v3 or puchasing several Tree Upgrades
 * Each tire works like a normal tire, this means it can also give x4 tires.

There are also Team Challenge tasks that require the player to collect 2/3/7 Mega Magnets for 50/100/300 points. Mega Tires do not count to this.

Trivia

 * Mega Tires are insanely strong, one of them gives the player x1,073,741,824 tires (1e9 in scientific) (1.073B) (If they have x4 tires), which is already as much as tires that drop in 15 minutes or almost a full tire storm.