I recommend getting it via patreon, you also get the android link and if u want to pay the 2nd tier u get their other game "Our red string" which is also a rlly good game.
I was able to purchase via Paypal, but this is the only game so far on itchi.io and the only purchase so far via Paypal, that required me to input information such as my Name & Address, including City, State, Zip Code. Seemed more than a little odd....
