In my Activity Log, almost all of the pages in the Software Library are full. Will the pages of the book expand or will any of the games I play after I fill up the Software Library not be recorded?
Activity Log begins with 16 pages, with eight games each, for a total of 128 records.
When those pages are filled, it will expand to 32 pages, with eight games each, for 256 records.
After those pages are filled, it gets more complicated. According to the manual:
So it will first delete old games, then (if you play more than 256 games in one month!) delete unpopular games.
The games in your daily play log are unaffected.