itch.io

I'm sorry to hear that, I was able to reproduce the error. I prepared a zip archive with different compression settings, which will hopefully fix the problem, but I can only upload it after the GBJam 11 is over. You can also try to use another decompression program. For example, 7-Zip extracted everything without a problem. If you haven't done so, you can also watch a video of the game here:

Yes, you'll need to install Java, unpack the Zip file, and then you can run the game. But don't expect too much, the game doesn't have much depth yet.