PocketGamer.biz on Wednesday published an analysis of 97 games that have been announced for Apple’s iPad, which will be available on April 3, and found that 26 percent of them are puzzle titles. Ports of existing App Store games make up 65 percent of the titles planned so far for the iPad, and indie publishers lead the types of studios with iPad games in the works, at 44 percent.

The action and sports genres were second and third at 12 and 10 percent, respectively, on PocketGamer’s list, followed by strategy and card/board at 7 percent each and shooters at 6 percent. New games are 16 percent of the titles in the works, followed by ports of console games at 10 percent and sequels to iPhone games at 4 percent.

Major publishers follow indie studios at 31 percent of the developers, followed by mid-tier developers (large indies) at 23 percent. Nearly half, 48 percent, of the developers are based in the US.

Existing App Store games will work on the iPad, of course, and the steady stream of those titles continue, including the holiday-themed puzzler Easter Eggs and the logic game Disacol, both released on Wednesday. In addition, long-time developer Freeverse announced that sometime in April it will release Pride, Prejudice and Zombies, which is based on the New York Times-bestselling book that mashes Jane Austen’s classic novel with George Romero’s sensibilities.

The popularity of App Store games has been a boon to publishers large and small: Paris-based Gameloft, for example, said on Wednesday that its 2009 revenue showed 11 percent year-over-year growth, with a sharp increase in net profit. Mobile games accounted for 94 percent of its 2009 sales, and its 60 App Store titles released since July 2008 accounted for 14 percent of its revenue last year.