LOOL give me 300 bucks for the vita and a memory card then  

Puppeteer

i'm getting them all though

I pick Tearaway , Ironically , as I love studio Japan and both of the other games are made by them.

I'm really excited about all three of these, they are most definitely my kind of games. However, puppeteer is the one I'm most excited for because it looks like it'll be the most challenging (hopefully).

Puppeteer all the way for me. It looks to have the best actual gameplay but really I'm in love with the aesthetic more than anything. I'm not watching anything more after that last trailer because I want to give my eyes and brain enough time to forget what that art style looks like until I get to see the game in full HD glory on my TV this September. Not just the graphics though. The humor and fourth wall breaking with the bear talking to the narrator just seems right up my alley. The head switching looks cool and those levels they showed in the halloween trailer looked very uniquely awesome. Looks like the love child of LBP and Nightmare Before Christmas. It's actually been my most anticipated game since it was announced and nothing has stemmed my excitement. I heard somewhere it's going to be pretty beefy lengthwise too which is great and it's only $40. Cannot wait for the 10th.

This Fall that and Beyond are sending my PS3 out on an ultra high note before PS4 hits and I hopefully get Infamous day 1. 2013 has already seen my favorite game in the Sly franchise and a legitimately new MP experience from GoW that's a blast, along with one of the series' better SP campaigns. LoU is coming this Summer with its awesomeness (yeah it's from ND so I'm assuming it'll be awesome along with hearing from every previewer that they are being wowed by it). If Castlevania is all as awesome as the vampire part of the last one it'll also have one of the greatest games I've ever played (the vampire part of LoS was one of my favorite parts of ANY game in my life). Add in Tomb Raider eventually along with GTA and Watch Dogs for my open world fix and this could the best year of my gaming life (still a lot of variables but it's really great so far and my most anticipated stuff isn't here yet).

Puppetter looks to be the most fun. Will be getting all 3 though. They all look enjoyable.

I will be buying all 3 day 1.

Tearaway for me, its on my favorite console atm and will be released at a cheapish price which is awesome.
here in Aus its $38 compared to the rrp of handheld games being $69 (although tbh Nintendo are really the only ones that charge full price)

Tearaway > Knack > Puppeteer is my order of excitement.

I will be buying all 3, though.

Tearaway first and by far, however gotta say Puppeteer also looks very nice. Knack remains, as for now, very normal almost borderline boring.