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.
In MAZE, you have to navigate a PETSCII maze collecting gold. In the game's initialzation phase, you watch as the PET constructs a complicated maze of corridors and rooms out of PETSCII characters, and you decide when the maze is ready to explore. If you let the maze grow to its maximum complexity, it becomes highly chaotic.
The only obstacle to completing the maze is your own patience. There are no tricks, traps, or opponents. Given enough time, you should always be able to collect all of the gold through brute force exploration.