The only difference between the Apple II and the Apple II+ is that the
Apple II has Integer BASIC and the "old" monitor ROM, while the Apple II+
has Applesoft BASIC and the Autostart monitor ROM. Most of the game programs
available today are written in Integer BASIC and most of the business,
scientific, and industrial programs require Applesoft, so the selection
depends upon what your application requires. Apple offers firmware cards that
will supply Applesoft to Apple II owners and Integer Basic to Apple II+
owners.