Entertaining game, I've only been playing for like 2 hours. Good mechanics of the cooldowns, chance to goto the next level, ect. One thing I will say is its not clear (In rebirth shop) whether the token means the Platinum one or the gold one, other than that its a good way to pass time

is it just me or are the balls downgrading to before max after i close the page

I kind of like the game. But there are 2 things. first, the number of the prestige upgrades is displayed one line too high (FireFox). And for some of the upgrades i don't know the meaning. So some kind of description would be nice.

No balls.

Interesting premise but the main appeal of plinko is where the ball lands at the bottom. If you somehow segregated the bottom of each section and provided rewards based on that... it could make it more interesting. (x2, x3, x4, x5, x4, x3, x2)

Graphics leave a lot to be desired. Audio too. Overall it's a good prototype but you should flesh it out to increase engagement. Also your ad system is not working whatsoever, but personally I find it annoying anyway.