Kixeye calls Kabam a copycat; Kabam says, 'Am not!'

Alright, so it's more serious than that, but we just can't help but envision these debates happening in schoolyards rather than public forums. Gamasutra reports that Kixeye has publicly accused Kingdoms of Camelot creator Kabam of copying the hit Kixeye game Backyard Monsters in creating EdgeWorld, Kabam's brand new Facebook strategy game. Of course, Kabam firmly denies the allegations.

"There is no question that the engineers of EdgeWorld had Backyard Monsters open in one window while they coded the copy in another," Kixeye CEO Will Harbin said in a statement. "It's not detrimental to Kixeye in the short term, but this kind of practice is bad for all of us in the gaming industry - it will eventually sour users and it certainly does the opposite of proving that Facebook can be a legitimate gaming platform."

Whoa, those are some pretty harsh--and specific--claims. Kixeye went even further, according to Gamasutra, to compare Kabam's hit Kingdoms of Camelot with fantasy strategy game Evony as evidence that Kabam "is wasting talent and resources on cloning games that already exist."

Kabam CEO Kevin Chou said in response that Edgeworld, which hovers at about 200 thousand monthly players since its launch, draws inspiration from "movies, pop culture, science fiction, literature, history and, most importantly, from our players." That's in addition to borrowing ideas and techniques from its previous four games. (In other words, "Am not!")

Keep in mind that these sort of exchanges aren't uncommon to Facebook games. In fact, Zynga--which has a lawsuit on its plate from SocialApps over allegedly misused source code from its game myFarm that led to FarmVille's inception--knows the feeling very well. We've contacted both developers for comment.

The mad science behind a Facebook game's success

Before making the decision to invest your valuable time and money on a Facebook game, you might want to take a moment to stop and think, "Just how long is this game going to be around?"

If you've played a lot of Facebook games, you can often go with your gut. For instance, if it's made by Zynga, it will most likely have a longer shelf life than a game from a smaller company for several reasons: Zynga spends a buttload of money advertising its games and it has the most powerful weapon of all -- a loyal group of players who are willing, dying really, to try the company's next big game.

Inside Social Games has published an in-depth piece on how to predict a Facebook game's success that essentially boils down to this: If the game is still attracting new players after three months, it has got a chance in hell of sticking around.

Case in point: Kixeye's underrated Backyard Monsters. The tower defense game is not the most well-known game on Facebook, but in the context of the ISG formula, it's one game that might be worth playing if you're looking for something new to add to your social gaming repertoire.