>>713787595 (OP)They rotate the catalog every month. About a dozen games leave and a dozen get added.
This is seperate from the monthly games, usually 3 or 4, that are yours to keep forever as long as you're subscribed. It's honestly a steal. $13 a month and you get access to thousands of properly good games from PS1-PS5. Once a game goes up on the service it usually stays there for at least a year, and games routinely get added, taken off, added again, taken off so there's plenty of chances to play every game you ever wanted to play for "free".