So yeah, a thread for that, but I might not be the only one who’s had this problem.
I couldn’t get that darn cursor to move so I could follow the fish in the mini-game.
The E key didn’t work, and neither did the G key (interaction) for me; the arrow keys didn’t work either.
I had to press every key on the keyboard, but to no avail.
Then a friend named Larouge told me to configure the “use tool” key so it would work, and sure enough, I hadn’t enabled that key on my keyboard because I don’t use it.
So no matter how you’ve configured your keys, just select one to assign “use tool” to, and the mini-game will be accessible.
It’s not the same key for everyone, especially for older users who have customized their key assignments.