Thank you very much to those who have enjoyed what I have released thus far. Your insights into the issues with the game will help me make it and my future games better.
I have added passive coin collection. Once there are 10 coins on screen, they will start to auto-collect as more are produced. I tried to handle the issue of the bird hp bar staying at 0, but I haven't been able to reproduce that. If it is still a problem, I will try to fix it other ways.
I will not be adding more to the game until I am sure this framework is free of game-breaking bugs.
Upgrade times are too long at all levels by about 10x. I understand that the game has very little content and you are trying hard to stretch it out, but I'm starting to get bored with 90% of this game being upgrade timers.
The speed up costs are too high. Rethink those numbers to something more like 1 vault coin per 24hrs. If you're going to extort cash with upgrade times, at least make it viable.
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I downloaded some chiptune music to make it more enjoyable. I see that my work here is done.