Back in April we brought you the announcement of Adventure Time: Finn and Jake Investigations, which is coming to a whole load of systems including Wii U and 3DS. Confirmed for 'Fall', the reveal was bizarrely accompanied by a 20-second proof-of-concept video that demonstrated how the popular duo would look in a fully 3D environment.

The early results were modest albeit relatively charming, but now we have a proper trailer. This is courtesy of Bandai Namco, which is publishing the game in Europe - Little Orbit is publisher in North America - this October. It shows the quirky sleuths exploring their world, chatting to bizarre characters and engaging in some combat.

It looks decent, if not amazing, though we're still not sure how it'll shape up on 3DS - in any case, check out the trailer below.