Changing the size of memory or changing the ROM version forces a reset of the PET.
The emulator has an IEEE-488 device at address 8. It can be used load and save (.prg) files.
Some programs don't run on ROM1 and some require more memory than the default 8K.
Arrow is a game written by Jim Butterfield, a well-known programmer and author who contributed significantly to the early Commodore PET and other 8-bit computer communities.
This is another snake game.