Recently released a beta build of Glover on the N64 and thought I'd share it here as well. Will add it to the beta section later.
I've just tried to boot it in PJ64 and it does not work, does work in Nemu though. It has run in PJ64 before though so not sure if it's only me.
On the games' main menu, press up once and you'll be able to access a level select mode. Debug menu is accessed by using the second controller (I believe).
As far as I can tell, all the music in the game is different from retail.