Hey, I'm only pointing Alchemy out because somebody specifically asked where they could play Mana Alchemy after the holiday season was over.
Okay, and because DC might have given a wee bit more thought to the name, heh. Yes, there are a zillion Bejeweled clones out there, and that's absolutely fine because you can't copyright a game design mechanic. But if anyone named one of those clones "Mana Bejeweled", there'd be a stabby-stabby, fire-and-brimstone, epically regrettable, lawyer-infested dungstorm, because PopCap/EA has the trademark on the name as related to the game design mechanic, and they're not shy about protecting it.
At the moment, Mana Alchemy is indeed flying under the radar, but the use of a trademarked name is worrisome: if anyone from the development house or publisher happens to see it here, they would have grounds for legal action. Moreover, they would feel compelled to pursue it, because of the weird way U.S. trademark law works: thanks to precedent, if a company is aware of a challenge to one of their properties and does not take action, their own claim to the brand is legally weakened. This applies equally to games, movies, book series, and so on. It's why Disney is such a legal arse-auger to anyone who tries to animate a mouse, why Paramount throws a wobbler every few years and clamps down on Star Trek fanfic, and why when Microsoft tried to release a game called Mythica, the sharksuits at Mythic Entertainment delivered a cease-and-desist with extreme prejudice.