Weblate game and freeplay are two distinct, yet often interchangeably used, terms in bloons td 6 describing high rounds.
Late game refers to the rounds near the end of the hard.
In 200+ late game, you basically have infinite money b.
Alch buffs lasts a very short time on fast attacking towers, which the vtsg is, which means that the alch buff is.
If you want any advice on getting through to the late game, here's a few:
Know what towers scale well:
Towers like the bloon master alchemist, or grand.