Monkey Lab

 is a feature in Bloons TD 5 Mobile and Bloons TD 5 Steam. It was released on Version TBA. The Monkey Lab allows permanent upgrades to be bought with Tokens to enhance gameplay of each game.

It is available in the main menu, accessible by scrolling though and found between the "Social" building and the "Settings" building.

Upgrades
In the Monkey Lab, the user can access 7 non-tower specific upgrades:  

Each of the above can be upgraded 8 times (13 times with Extreme Mastery unlocked), costing more tokens the higher the upgrade tier.

In total to max out all sections it would cost 2209 (541 without Mastery upgrades), with each section being about 315 each (77 without Mastery upgrades).

Mastery upgrades
Normally, the upgrades max out at Level 8. However, unlocking particular Mastery Modes will unlock more upgrades. The requirements of each consecutive Monkey Lab slot continually increase, requiring more and more different tracks to require full sets of medals.

Trivia

 * All upgrades cost the same when upgraded to the max level. This does not apply to mastery upgrades.