Dev forgot to take out his own test code before pushing out the latest version.
You can fix the current issue of not being able to start a new game either by downloading the pre-fixed script.rpy file I have attached into your `Invulnerable/game` folder, or you can fix it yourself using the `unrpa` tool:
Change lines 289 and 290 of `script.rpy` from
Code:
#jump confirm_adult
jump test_case
to
Code:
jump confirm_adult
#jump test_case
Save (or download) the file and relaunch the game. It should work properly now.