I just finished Thomas Was Alone on my Vita and I must say it is well worth the ~$10 on the platform. It's free with PS+ in the EU, (reduced price elsewhere) and has cross-buy.
Popped it in at 10:30pm and didn't put it down until 3am - somehow this game made me totally adore characters which are essentially just coloured rectangles.
Anyway - for those considering having another great game to play on their Vitas, here are some notes;
- Its level design really leans into short-form gaming sessions (even though I didn't play it that way), with 100 levels making up the 3-5 hour experience so it actually makes a tonne of sense to get the Vita version. In terms of difficulty, it ranges from pretty easy to moderatly challenging though I'd say it never gets hard. Also, most levels have nice short little insights into the characters with narration, so you get drip fed the cute story along the way.
- Controls are responsive, the game is beautiful on that screen, etc. It's a solid port with only 2 issues that I could find.
- In 2-3 short sequences, the camera zooms all the way out so it can be hard to track everything that is going on the comparatively small screen.
- With my Vita, I had fits and starts of a bug, not sure if it's hardware or software related (I'm running the latest firmware for what it's worth) where the game would take input as if I were rapidly swtiching characters (as if hammering the shoulder buttons). They are also quite sensitive during normal gameplay. (ED: Also, it appears others have not experienced this)
However, those gripes certainly didn't get in the way of the overall experience, so I highly recommend this version of Thomas Was Alone.