In both games, you have to synthesize it.
In Kingdom Hearts, you need:
* 5 Lucid Gem
* 5 Power Gem
* 5 Thunder Gem
* 3 Mystery Goo
* 3 Gale
In Kingdom Hearts 2, you need:
* 13 Orichalcum+
* 1 Orichalcum
* 1 Mythril Crystal
* 1 Dense Crystal
* 1 Twilight Crystal
* 7 Serenity Crystal
As well as the Ultimate Recipe, which is found in the Mansion at Twilight Town.
the ultimate weapon was the revolver mentioned at the end of the story. Good Luck!
For info, check www.gamefaqs.com
Ultimate Weapon - 2011 is rated/received certificates of: UK:12
Godswords.
Swords
a knife
In Kingdom Hearts II you find the recipe for the Ultimate Weapon in a chest in Twighlight Town by the pods where Donald and Goofy were sleeping.
114 soras or surats (or chapters in English).
Ultimate Weapon - 2007 was released on: USA: 27 August 2007 (IFC Media Lab)
In Flyff, to create an ultimate weapon, you'll first need to upgrade your existing weapon to +10 using the upgrade system. After reaching the required level, you must then collect a special item called an "Ultimate Weapon" from a specific quest or monster, along with a "Transy" (a transmutation item). Once you have these items, visit a Master Blacksmith to combine your +10 weapon with the ultimate item to forge the ultimate weapon. Ensure you have the necessary resources and meet any level requirements to successfully complete the process.
Exosquad - 1993 Ultimate Weapon 2-4 was released on: USA: 1994
The cast of Ultimate Weapon - 2011 includes: Jimmy Brendan as Krow Dawid Pula as Black Death