i think u should add a building after chancemakers called, "parallel universe taker" it should take cookies from parallel universes before they are eaten. they should cost a fortune and produce a new tier of cookies for buying buildings where they start costing infinity. that then after u get there for all buildings, u can purchase an upgrade to access a cookie converter to convert a lesser cookie to a bigger cookie. then u can buy the infinity buildings
EDIT: this could also be the cookie currency for certian upgrades and u can have new acievements for each new type of cookie. and all upgrades purchased after that building gets to it cost the same amount of the new tier.
acievements: parallel unlocked-have 1 parallel universe taker universe hurt-have 10 parallel universe takers universe paralized-have 100 parallel universe takers universe dying-have 125 parallel universe takers universe collapse- have 500 parallel universe takers brand new-bake 1 tier 2 cookie days old- bake 100 tier 2 cookies weeks old-bake 1,000 tier 2 cookies months old-bake 1,000,000 tier 2 cookies been a while-bake 9,999,999,999,999,999,999,999 tier 2 cookies new again-bake 1 tier 3 cookie days gone by-bake 1,000 tier 3 cookies months past-bake 1,000,000,000 tier 3 cookies dejavue-bake 1,000 tier 3 cookies i'm getting old-bake 1 trillion tier 3 cookies in my death bed-bake 999,999,999,999,999,999,999,999,999,999,999,999,210 tier 3 cookies my great grand son is taking over-bake 100 tier 4 cookies impossable-bake 900 million tier 4 cookies my great, great great grand son is old-bake 999 decillion tier 4 cookies HOW!!!!!??????!!??-bake 1k tier 5 cookies new recipe-unlock the cookie converter(tier 1) old becomes new-unlock the cookie converter(tier 2) OH WOW!!!!!-unlock the cookie converter(tier 3) im long gone-unlock the cookie converter(tier 4) my great,great,great,great,great grand children are long gone-unlock the cookie converter(tier 5) family heirloom-unlock the cookie converter(tier 6) i worked so hard-assend with 1 decillion tier 2 cookies im old and tired-assend with 1 decillion tier 3 cookies im about to die of old age-assend with 1 decillion tier 4 cookies im his grand son-assend with 1 decillion tier 5 cookies im his great,great,great grand doughter-assend with 1 decillion tier 6 cookies 1 million years gone by-assend with 1 decillion tier 7 cookies
upgrades: cookie converter-unlocks the cookie converter(different tier depending on how many times u leveled it up)(cost=1 octillion current tier cookies) cookie rebirth-lets the parallel universe taker produce next tier of cookies(start at tier 3)(cost=1 octillion current tier cookies) universe strengthening-parallel universe takers are 2ce as efficient(cost=1 sextillion tier 2 cookies) better technology-portal, parallel universe taker, antimatter condenser, grandmas, factory, mine, farm, bank, shipment, alchemy lab, and time machine are 2ce as efficient(cost=999,999,999,999,000,000,123 current tier cookies) sugar rush restock-lets u use the sugar rush again(cost=1,000,000,000,000,000,000,000 tier 2 cookies)
EDIT2: the mini game could be u trying to get a spaceship around nebulas, black holes, stars, etc. u have to get to the parallel universe portal and back and u are paid in the current tier of cookies being produced by the parallel universe taker.