I bought Fieldrunners (I'll write FR in this post) yesterday since lots of people recommend it and Tap Defense (TD) wet my appetite for Tower defense strategy gaming. But for me Fieldrunners was a disappointment. Yes, it has nice graphics and it's an OK game. But it doesn't come close to the fun provided by Tap Defense. TD has more and much more interesting Tower types and its system with interest on your spare gold is brilliant. Further, in FR your enemies sometimes look like small kids and they also sound like that when they die. It doesn't feel good at all. Killing creatures from Hell is an excellent alternative. TD lets the enemies run along a path. In FR they move freely. Since FR isn't fun enough I'll probably not spend enough time with it to decide which type of field is more fun. I think I would have liked a combination. Or a path that divides at some points. Choking one branch might make the enemies to choose the other. I also like that TD makes a pause between the rounds and also gives some info on what's coming and sometimes some advice. It gives me a much better feeling of that I'm in control than FR's constant flow of enemies. FR has a more polished user interface. I'll give it that. But then it's a simpler game so maybe it's easier to make a slick interface then. If you're playing TD and haven't gotten enough of it yet, save your $4.99 a while before buying FR. I think the developers behind TD can be trusted to make more really good games. They seem to have what it takes to figure out what makes a game fun. Now, if they could hire the graphics designer from the FR team it would make a perfect match!