http://www.macnn.com/articles/08/06/06/aki.mahjong.for.iphone/
Ambrosia bringing Aki Mahjong to iPhone
updated 05:05 pm EDT, Fri June 6, 2008
Aki Mahjong for iPhone
Ambrosia is currently adapting its first iPhone game, Aki Mobile Mahjong, and is running a closed beta test as it works to release the game. Little is revealed on Ambrosia's development page, but it has already said that it is making use of Core Animation to select between levels, as well as EDGE and WiFi to download new levels. Aki Mobile Mahjong will also allow players to pause the game to take a call, and when the game is relaunched, they will be right where they left off.
Similar to the desktop version, Aki Mahjong Solitaire, players solve mahjong tile puzzles as they journey across Japan.
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Not a feature of the game
Pausing when using the phone is not new. All iPhone apps do that. The iPhone version of OS X is designed to allow only one user program to run at a time. (some OS functions continue to run in the background but not an application not provided by Apple.