any given month there's usually 5 - 7 free games, sometimes those slots are taken by Vita games or there are just a lot of games.

however they are not super-strict about acquiring the games - if you checkout a game while it's free on PS+, it's yours to download whenever you're subscribed to PS+ whether you download it immediately or not. The only restriction is being a current subscriber - if you let it lapse, as I did the past 3 days, you get redirected to the store's subscription page whenever you try to play.

so if you weren't subscribed at the time these games were slotted, no, you can't get them later. Bioshock 2, Just Cause 2, inFamous, inFamous 2, and so on won't be in your IGC if you subscribed today.

but you don't have to DL them right away. you just have to express intent to play. and then they're available forever (assuming you're prepared to sacrifice three+ hours of PS3-power to downloading the game)

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