NES
Castlevania
Castlevania II Simon's Quest
Castlevania III Dracula's Curse

SNES
Super Castlevania IV
Dracula X

Double Sword	Description	Stat	Found / Dropped By
Claymore	Scotch two-handed sword	ATT +26	Underground Caverns / Valhalla Knight
Estoc	German thrust sword	ATT +39	Olrox's Quarters / Valhalla Knight
Flamberge	Flame-edged sword	ATT +31	Cloaked Knight
Great Sword	Greatsword of Aubec	ATT +35	Guardian
Katana	Unsigned katana	ATT +32	Necromancy Laboratory / Tombstone
Masamune	Legendary masamune katana	ATT +68 DEF -30	Black Panther
Muramasa	Bloodthirsty sword	ATT ??? DEF -4	Vandal Sword, Scarecrow
Nakamura	Poorly made sword	ATT -5	Blade Soldier
Nunchaku	Strikes enemy twice	ATT +10	Underground Caverns
Obsidian Sword	Two-handed obsidian sword	ATT +1	Lesser Demon
Osafune Katana	Osafune-made katana	ATT +50	Reverse Caverns
Red Rust	Rusty-red sword	ATT -2	Bone Scimitar
Sword of Dawn	Summons Dawn Warriors	ATT +27	Reverse Keep
Takemitsu	Bamboo sword	ATT +1	Long Library / Fleaman, Spectral Sword (Auxillary Sword)
Yasutsuna	Yasutsuna-made katana	ATT +60	Werewolf
Zwei Hander	German two-handed sword	ATT +38	Blue Venus Weed