Tomorrow's PlayStation Store update will add two games to the Instant Game Library for PlayStation Plus members. The new freebies are Ico and Grand Theft Auto: Liberty City Stories (PSP and Vita). I'd also point out that Sleeping Dogs is down to $9.99 for Plus subscribers, should you somehow miraculously not have enough open-world games in your life right now.
While I imagine most people who would be interested in Liberty City Stories will stick with Grand Theft Auto V this week -- how many times can I link to our review in a single day? -- I might be underestimating the series' fandom. Ico is Ico -- play it already! If for no other reason than to say you have when it gets brought up in conversation.
PS Plus: ICO & GTA: Liberty City Stories Free for Members [PlayStation Blog]