This is one of the updates of all time.
DaVince
Recent community posts
You might have to set an executable bit on the file. You can do that in the file properties in most file managers, OR by navigating to the directory in a terminal and typing:
chmod +x "./Heaven Studio"
If that gives a file not found error, make sure you're in the same directory as the file and make sure to type it out instead of copying it because I don't know if this comment section is modifying any characters I'm typing.
You open the .riq files by launching the game and clicking on "Play", then selecting one of them in the file selector.
If you do want to open the minigames directly outside of the game by double-clicking them, you can go into the file properties for any riq file and and associate it to run with the Heaven Studio executable instead. (I image they're opening up like zip files for you by default)