Many thanks to Jason Surguine for drawing my attention to a newly released Arvale mini-game.  It's actually a fully-playable prototype of a new engine he's been working on.  In fact, if you're aware of the series of prototypes released for Spore you'll be instantly familiar with the concept.

Arvale is a big hit on the iPhone platform (that'll teach me for buying a Touch Diamond...), and there's a brand new 3D engine waiting in the wings if the teaser screenshots on the PDAmill forums are anything to go by.  According to the blurb, "It’s called Arvale: Really Short Tale. It involves Duncan after the events of Arvale: Journey of Illusion, and all Arvale fans will enjoy seeing him and Entoque again, I’m sure.  Veteran RPG’ers will most likely breeze through it in about 15 minutes.  Veteran Arvale players will probably occupy themselves for about an hour just checking things out (yes, there are a few Wheelbarrows)".

Further details available in this blog post, and I'm afraid that it's PC only for the time being.