Social game make Zynga - often accused of ripping off other's ideas - has insisted everyone copies everyone.
EA has said it's "standing up for the industry" with its high-profile lawsuit against Zynga over alleged copyright infringement.
The Tetris Company has successfully argued that block puzzler Mino by Xio Interactive infringed its copyright.
Serial copycat developer Anton Sinelnikov has had his range of cloned App Store games culled by Apple.
We all know the clones. And often, we welcome them. After all, you can't play Blizzard's World of Warcraft on a phone, so Gameloft's Order and Chaos seems like it fills a hole and doesn't hurt anyone. Cloning isn't new, either. From Pong, probably the most copied game on the planet and allegedly a copy itself, to Breakout, success has always bred various degrees of imitation.
It's not about being the first to market, it's about being the best when you do finally get there - that's Zynga boss Mark Pincus' response to accusations that the social gaming giant has been cloning other developers' games.
Casual gaming behemoth Zynga has been blasted by Tiny Tower creator NimbleBit following the launch of new Zynga title Dream Heights.
Dream Heights appears to be a virtual clone of Tiny Tower, which tasks players with adding floors of shops and apartments to an ever-expanding towerblock.
"Dear Zynga, (all 2,789 of you)," an open letter from NimbleBit begins.
Unputdownable iOS time-waster Tiny Wings is Apple's pick for the European App Store's iPhone game of the year.
It would probably get boring for you lot if every week was filled with top-rated games. In fact, I know that a lot of you kind of glaze over at some of the scores, and some outright moan that mobile games get routinely over-rated ("9/10? Better than Halo? ROFL")
Like any platform, it's important to judge mobile games in context. An inventive 9/10 puzzle game costing 59p can never be the same as a 9/10 epic action game on a home console. But nor would you necessarily want it to be.
Trying to somehow read something definitive into what a score 'means' is, a slippery subject, and yet we all debate them endlessly. But at the same time, as long as you're always dealing with like-for-like comparisons, you're on safer ground.
NimbleBit's freemium effort.