Secret of Mana (English version name of Seiken Densetsu) is an "Action RPG" game on Super Famicom (or, outside Asia, Super NES) by Square.
GameFAQs has also more info about Secret of Mana (Seiken Densetsu 2) and Secret of Mana 2 (Seiken Densetsu 3).
Note: The English name of the first Seiken Densetsu is Final Fantasy Adventure, available for GameBoy. Legend of Mana is Seiken Densetsu 4, PlayStation.
For Mana's fanlisting, listen to Destiny Calls.
More Mana's websites at Seiken Densetsu Series in dmoz.org.
It is my favorite action RPG of all time.