Note: I edited my "fun" star rating to 3 but it doesn't seem to save that... so... ignore the 4.
I was really looking forward to some LEGO action on my PS Vita, but this game is really gimped. I don't know why the Vita was given a handheld version, based on weaker hardware when this system is capable of PS3 games. Granted, not perfectly, it could have easily gotten a slightly toned down console game instead of a completely different handheld version that's much worse than the console counterpart.
For instance, within the first 10 minutes. You'll miss out on gameplay that's in the console versions. (flying on your broom) Instead, you just get a cutscene skipping that entire gameplay section.
The cutscenes are VERY blurry and given how beautiful the OLED screen is, it's a real shame. The game's levels are also different from the console version. Much less detail, different locations for some things and in general just less of everything. And the sounds are extremely terrible. Collecting the little 'coins' has never sounded so annoying. (this is my first portable LEGO game, didn't bother me in console versions. Even from last generation)
The difference I'm seeing (watching a walkthrough on YouTube) versus what I have played is staggering. I really regret purchasing this version. Unless you're looking forward to getting trophies while still being portable, I would suggest simply buying another version. Even the touch 'features' in the game aren't that great.
The PS Vita deserved a better version of this game, because it is more than capable of handling it. Here's hoping that LEGO Batman 2 (edit; it didn't) and LEGO Lord of the Rings turn out better for Vita owners.
The game is still fun, but it's a fraction of what I could have been playing if I just bought it on my PS3. Which makes me really not want to play it at all.