Well, played it to the point where only 3 upgrades are left , eahc requiring 9999 four leaf clovers.
now I can do basically nothing than jsut wait while the swords grind for me.
however given that only every couple of minutes at the fastest i get 1 clvoer, I think getting 3 times 9999 clovers will take months and years....
game has probably reached full release state until then already O_o
Well, rather early on, you can unlock the upgrade that gives you a four leaf clover for each 15 streak, which u can upgrade twice so only 13 streak is needed.
which is still hard to achieve since msot streaks are 10 at most.
but someone with way more time than me and where the game doesnt lose all progress once you close and reopen the browser may actually collect all 9999 to colelct the mana coins, that new sword and that for the ridiculous cost utterly useless +0,1 sec fever duration upgrade.