Hey Shiku!
Sorry for the delay with this reply, a little hiccup on Itch.
For Itch you can pick the version of your choice, download. extract and play (saves carry over automatically).
However, over on our Patreon, we have a patch system! You download the patch (which is around 200MB+ on average, and it will tell you which version its upgrading from and to)place it in your AHITR folder and run. Few on-screen prompts and that's it!
You can have a look at the latest free version here:
https://www.patreon.com/posts/0-7-6-free-103745447?utm_medium=clipboard_copy&utm...