Barrel Mastery

Barrel Mastery was introduced into Scrap Clicker 2 on the 14. march 2019 in the 7.0 update and is one of the most complex and fun lategame features, according to some players.

It comes from a complex suggestion by the player Phazer (Link to the idea).

Announcements and leaks
Barrel Mastery was announced on the Discord Server on the 4. march. On the 13. march, there was a beta version available for a very short time.

Also, before the public announcement, there were DM leaks showing Endte talking a little bit about the Barrel Mastery. In addition to this, he announced himself that 6.9 will be skipped, which started the hype.

Unlock
It can be unlocked at a x400 Stars tree upgrade for 50k Magnets.

How it works
It adds stars (White / yellow with a number from 1 to 5 in the star if yellow) to the barrel list. When a barrel is tapped, information can be seen. The barrel has to be merged x times to reach the next Mastery level, which gives Mastery tokens. There are 5 Mastery levels:


 * After level 5 was reached, it shows "10000/Max".
 * 15 Mastery Tokens can be won from 10k merges of a single barrel.
 * While 1* barrels gives 4 tokens / 1k merges, 5* gives 1.5 / 1k merges.

Use
Mastery Tokens can be spent on several upgrades (blue up-arrow at the top left corner of the barrels list). They all cost the same, but some have unlock requirements. You can find a full list at Mastery Upgrades.

Short List of Upgrades
A full list can be found at Mastery Upgrades.

Trivia

 * It was seemingly the most hyped feature together with the Scrapyard v5.
 * It's most effective to get all barrels on Mastery level 1, then 2, then 3 etc.
 * There's no sense in trying to max out the last 3 barrels. It's actually not even possible to level the last barrel.
 * It's the only thing in the barrel tab that gives a boost.