Monster Hunter 3 in the monster, monster 3 in the first sea battle, lamprey fish, water beast, big sea dragon, etc. are 3 in the new monster, and the traditional speed dragon class is replaced by the dog dragon class, but the portable version of the 3 (Portable 3, that is, P3) did not inherit the sea battle system. Another: Monster Hunter series was originally released on home consoles, and then because of good sales, so the development of the portable version, generally after the release of each work will be released in the corresponding portable version, the portable version of the inheritance of the home version of the strongholds and content, and sometimes according to the situation of the deletion of some of the content, and the Monster Hunter P3 is an unprecedented not inherited the strongholds of the 3, but rather for the Japanese-style Knotting Clouds Village, featuring monsters from the sea dragon into the Razorwolf Dragon, it seems that the old card is to make the portable version independent of the 3, and the new monsters. It seems that the old card is to carry the version of independent (strongholds are not inherited just, the signature old monsters are still inherited, most of the new monsters are still copied from the home machine).