Yeah, so, my game time isn't accurate.
I forgot I had it open! Anyway, I'd say the total game time for one episode was right around 2 hours. This is an older episode game from Telltale and it does show, to a degree. The Telltale engine works well and it has carried them on through recent releases, and it holds up rather well in that respect. In this, you can set your expectation to what you would (in terms of graphics) for a game released around this time - it looks pretty good, but certainly not what we expect in 2014, but still fun to look at! Some things haven't held up this well, at all.
The good and the bad are in equal supply with this, I think it looks adorable and the characters and voice acting are fantastic. Telltale really has a talent for making things like Back To The Future, The Wolf Among Us, The Walking Dead, etc., really come to life and be fun again. The light touchings of "pick your own adventure" stylings were already perfected in that "Telltale Games" way, even when this came out.
The biggest negative to this I have to give to the controls. They're clumsy. Extremely clumsy, and this has been fixed to a degree in recent releases, but it's probably my biggest complaint with any of their games.
I'm sure if this were early 2010 and I were playing this, my complaint would be the same with the wonky controls, but I'd probably think the graphics were better by comparison, but we've all become a bit spoiled. I didn't experience any problems with gameplay whatsoever, and again, the overall feel and fun-factor of the game (this episode, anyway) is huge. Finally, the graphics, even if dated, are lots of fun to look at and very adorable.
Everything considered, 7.0/10 - As with a lot of this type, pick up the whole series on a sale or get it as a gift (like I did! :D: ) and you'll have tons of fun with it. I'm likely to play through it again, but replayability is most definitely limited. Good job, as always, Telltale.