Added patch, to change the duration of oxygen underwater, also updated the screenshots, the update was still showing images that no longer represent the current state of the hack.
On the other hand, the changes in the ROM information had not been reflected either.
In recognition of the 30th anniversary of Mappy by Namco, Makimura Manufacturing has released a patch which converts the sound engine of the original Mappy by taking the old NROM mapper and replacing it with the NAMCOT 106 mapper used in Mappy Kids. The sound in the game is a closer resemblance to its arcade counterpart.