itch.io

https://mega.nz/file/d8FQkTBD#2QFBfsuGqorP-hjYEDhYLTg8mjuPP8eKcF6Pwn6St9E

How do I do this if the mouse arrow is in the game window?

I start the game, a window appears that asks if I want to start learning and tells me to press the X or O keys, which are not available on the PC at all. Is there any way to stretch the game to full screen?