The full game is now out on Steam!
This version on itchio is the free demo. There's a lot more story and content in the full game.
Hi, the Steam price should be similar to the Kickstarter's lowest tier, though it's not finalised yet. The mini VN will be a short story about the main characters, it could be backstory, alternate universe (e.g. modern world), or an epilogue-style romantic story. This depends on what the backers vote for when the campaign ends (just over 1 day until that).
After looking into the issue, I think it might be an itchio thing. I can run the game on my macbook.
Troubleshooting:
If these don't work, let me know and I will try to change the code and re-upload. Please tell me if there is a specific error message that pops up, or any other info, to help find the issue. It should work better on Steam automatically because Steam seems to do some extra code-signing processes! I got this by searching online, I'm kind of clueless since it's my first serious game. Hope it works :)