Im new to PS+ and I just recently made a year subcription, so I dont know much about it. Im looking right now at the March game update saying what games are coming and it says some games are leaving ps+ so what happens when the games leave ps+? What I mean by this is that, say you download the game and have it on your system. If the game leaves ps +, does it become deleted from your system or does it stay there until you remove it?
It works like this: You have a chance to download the game(s) for a week or two. After that they go away and new stuff comes in. IF you download the game in that timeframe that its available, its yours as long as youre a member of plus. Even when it shifts out, as long as you got it in its timeframe, its yours to download and redownload forever as long as youre a member.
If you "purchased" it when it was free on plus, then you have access to it for as long as you're still a PS+ member. Even if it's removed from the current line up, you can still download it whenever you want.
The only time you can ever lose access to a game you got from plus is to drop out of the service completely.