But yes, there were quite a few word processing programs and games that worked on the early versions of the Macintosh System software.
MacWrite is the standard one, there are also early versions of Microsoft Word, WriteNow, MindWrite, and a few others.
You can check out the Macintosh Garden's list of software released in 1984 for a simple list of software that will work on the earliest Macintoshes. Lode Runner, Daleks, Missile Command, Airborne!, Amazing, Through the Looking Glass, and Shufflepuck were a few of the early classics.