Thank you so much for the bug report!
The evolution sprite issue is a little strange, since this hasn’t happened before as far as I know. I’ll check it again and try to figure out what’s causing it.
I’ll also look into Elecmon’s evolution. Thanks for letting me know.
There isn’t a catch/evolution guide yet, since this is still just a really small fan game haha. But if there’s anything specific you’re curious about, feel free to ask and I’ll let you know!
As for fullscreen mode, I’m not planning to support it at the moment.