I've given this game a 'Yes' recommendation, but only if you can find it going really cheap in a deal or a sale somewhere.
So - Demonicon. It's not the worst game you'll ever play, but it's not terribly well designed, and it's kind of 'obvious' that it worked to a budget, which is a shame because it's got some nice visuals and as an RPG it manages to hit some of the right notes. It's got a lot of obvious bugs and half-finished elements, it's kind of clunky, and the story isn't amazing, and isn't really developed entirely well. I think the game tries to rely too much on the background The Dark Eye lore, which will appeal only to fans of that pen & paper RPG. The first couple of areas as well are a bit cumbersome, and it's not really that enjoyable a game to begin with.
But eventually, after about 10 hours or so, maybe? Towards the latter half of the second hub, suddenly you get a sense of... moorishness. By this time Cairon should have some better abilities & equipment, and should be levelled up to a point where he's actually slightly ahead of the curve for that area. This makes the fighting easier (but not boring), which stops some of the sluggish battles you may have had before this. Keep on top of things and this advantage can last you the rest of the game, and all in all it makes you feel like a little bit of a badass.
As an example, in a later hub section, I found myself confronted by three or four demons in armour, wielding some pretty nasty looking weapons. I was preparing myself mentally for long and difficult fight, and I ran at the first one and did that stabby move that's kind of like what Brad Pitt does in the movie Troy. The demon knight fell instantly - recovering from my momentary surprise, I repeated the move on the others, and then the fight was over. I felt like a total BOSS, and that's something that this game is kind of good at, especially in the later half.
So – all in all, if you find it cheap and are willing to put up with a rather poor start, this is one of those one-shots that can entertain you for a while. I finished the game in 26 hours, so it’s not short by any means, but it’s fairly linear for an ‘RPG’ so the story can only go on for so long.
For more information, especially about the specific mechanics of the game, check out my full review at Strategy Informer: http://www.strategyinformer.com/pc/darkeyedemonicon/reviews.html