I bought 5 games from the mid-year sale on PSN. Matterfall, Alienation, ( love Housemarque ) and Trine 1, 2, and 3. Was tempted to get Oh...Sir! The Insult Simulator for $1.99, but thought better of it quickly. It's odd.....I played Matterfall briefly, and went to look at the trophy list, but it didn't appear on my list. I even manually synced it to no avail. I have NEVER played a game and not had the trophies visible in my list in the decade that they've been around.
I haven't gotten around to buying Matterfall yet but it looks great Housemarque games are crazy, especially with the particle effects and stuff, they just look so... clean, they're action packed, have a million things happening at once, and still run smooth as fuck. I remember playing Resogun when we all got it for free with Plus and was gobsmacked because as simple as a game it is, it's visually gorgeous when shit is going off, and not a single dip in framerate. Not to mention it's still absolutely fun as fuck to play for short bursts.
I might have to install Alienation too since I also got that with Plus sometime earlier this year, and I LOVED Dead Nation, especially playing it co-op too!