Related question – What does the donation machine do?
In BoI: Rebirth, you can donate to a machine in the shop room, and as you put in more and more money, you can unlock things.
When you hit 999 coins in the machine, you unlock an item and the machine blows up. I figured that was the end of that.
However, on my next playthrough, the machine was back! So I have dutifully been feeding more money into it. However I'm up to a couple of hundred gold in there now and it doesn't seem to be doing anything.
Am I wasting my money? Or will this 2nd round of donating eventually unlock something awesome?
Best Answer
It won't unlock anything, all you can do is use it as a bank for future runs.
The blowing up was not caused by adding your 999th cent, that was because you got it to 1000 cents.
So in a way you are wasting your money (if you donate money instead of buying stuff anyway), in a way your are giving later runs a potentially bigger chance for buying items (assuming you bomb the machine in that run).