Talk about a miserable waste of money. This game was so cheaply put together that the video quality is pathetic and the game is loaded with glitches. In just 3 hours you're done and there is no replay value at all. I feel sorry for any DBZ fan who bought this when it first came out at full price.
You play as Goku and basically go through the sagas leading up to the defeat of Frieza. Each new level pits you against insanely strong enemies so every battle is a struggle. You spend the majority of your time training because the enemies are insanely powerful.
Pathetic graphics, limited skills, no multiplayer, and a stat system where the numbers don't really reflect what you're seeing.. Legacy of Goku is a pathetic attempt at an action/RPG game.
The sequels, Legacy of Goku II and Buu's Fury were fantastic. Fortunately, this game also comes in a 2 in 1 cartridge with Legacy of Goku 2. If you can find it cheap online, buy it! Legacy of Goku 2 is a massive improvement in every aspect though. Never ever buy this game alone. Its like $3-4 now. Save that and go buy yourself a sandwich or something.