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 BAT!, you fly what the game's flavour text calls a radio-controlled superbat, eating bugs to maintain your energy. When your calorie count reaches zero, it's game over; your score is how long your are able to remain airborne. Control takes a bit of effort to master: your bat has momentum, bounces off walls, and is affected by gravity which is set to 9.8—a neat detail that most people would never notice.
The sound in this game suits the action. I didn't play for long, but overall I think this one can be fun for a quick game or two. However, this game does PEEK memory location 151 to read the keyboard (automatically corrected to location 515 on Revision 1 ROMs), so it is not compatible with the 4016.