Tree Upgrades

The Evolution Tree (also referred to as "Tree Upgrades" or "Skill Tree") is a major feature exclusive to to Scrap Clicker 2 and is unloc

x45 Stars

 * The Scrap boost upgrade costed 250 Steel Beams until 9.5, where it was changed to 200.

x225 Stars
Note that the last upgrade (About Merge levels) was not added for a long time: Until 7.1.

x2250 Stars
Note: Upgrades which will come soon are indicated with the symbol to the right

Trivia

 * The cost of all upgrades available through x1000 Stars is 94,150 Star Fragments, 5,554,000 Magnets, 62,18B Golden Scrap, 9,775 Steel Beams and 710,354,825 Wrenches.
 * The Million Merge Boost upgrade used to say "Get a x1.05 Magnet Boost every 1 Million Merges" and also have that effect before version 8.4.