You have to play Journey. It doesn't utilize your rental service, but it will cost about the same. And you have to play Journey.
I managed to play it when I was back for Easter, and I played through it several times and loved each of them. I distinctly seem to remember achieving more trophies than are showing up on my Giantbomb page such as the various secrets and the entire playthrough with someone else, but as it's been a while since I've been on my PS3 I can't say for certain so I'm not sure what's going on there.
First of all apologies if this is in the wrong forum (I'm not entirely sure and this is my first post, I'm very new). I'm about to get home from University for what will be my last big summer holiday for the foreseeable future (around 8 weeks) and I want to play a few games as that's not something I really have time for at Uni.
Rather than pay £20 to get one semi-new game, I've decided to go for a couple of months rental service from a site like Boomerang and be able to try out several. That's where this thread comes in; I'm looking for recommendations for PS3 games that won't take up too much time and I'll be able to play for a week or so and enjoy. I've not played all that many games (I've just connected my PSN to this account, so you can have a look at my achievements if you want to make sure there's no overlap), and I don't necessarily need my games to be of the highest quality, rather I'm more drawn to interesting ideas that offer something a little different across a wide array of genres. This is my pretty eclectic list so far: