Dragon Ball Z Budokai 3

First choose goku in DU mode and get all the dragon balls before you fight majin buu. Then continue the story till you fight Broly. Then go to the world tournament to get Gogeta.

To defeat the z modes easily start DU and play it till your last with very easy level. Before your last match turn your level to z and then beat the final fight and you will complete the game on z mode.

For this you must have a character that knows an ultimate attack (like "Big Bang" or "Spirit Bomb"). Also, this is much easier to do if you can get their baselineki guage the same or higher than the cost of the attack. For example: if you want Goku to use the "Sirit Bomb"(which is actually "Sper Dragon Fist"), which costs 5 ki guages to use, get Goku to SS3 or SS4. Then, just stay alive until your opponent goes into hyper mode and keep flying backwards so you don't get hit (which you should almost always do when your opponent is in hyper mode) until they are right about to exit hyper mode. That is when you enter hyper mode and because they cannot move for about 4 seconds, you have just enough time to use your ultimate attack. NOTE: in case you don't know what the basline ki guage is, it is the point where you will automatically recover ki, also the bars will be bigger than usual and will recover faster when you charge your ki by yourself.

Level - Code

Z Mode ( Goku's Wish ) - Beat Dragon Universe on Very Hard once
Z2 Mode ( The Path to Power ) - Beat Dragon Universe on Z Mode once
Z3 Mode ( Endless Path to Power ) - Beat Dragon Universe on Z2 Mode once

First, when you get up to Buu Saga, goto the Plains near Goku's House. After going there, fight Gohan as Majin Vegeta. After you finished fighting him, keep going through the red parts of the map until you hit up to Kid Buu. Let Kid Buu beat you, then put No in the Continue screen. After that fly a bit back, and you'll see 2 reds touching eachother. Go push X on the left one, and you can fight Buu agian, but when you win, you can fight Broly.

In "Dragon Arena Mode", enter this code:

)@&$iDI-zC!$H)hmtyVTTMjJrBnRewJYr&M

Go to Dragon Arena mode and enter this code : YpQZPruNbzchTjRIY%bfacMjY&&NkdHqvgym

To unlock Freiza's space Ship, a move that is the same as a Full Senzu Bean that only Frieza can use , look closely at the map in the second level (with Frieza and the Ginyu Force). You will see a little island in the middle of the map. Go to it and get the item, which is Frieza's Space Ship.

Press Circle Instead Of Square To Get The Destroyed Version Of A Stage.

To get Omega Shenron,(The Real Way!) put it on very hard mode and play as Goku, then get to the part when Gohan is absorbed by Buu. Then go to the middle part of the middle yellowpart on the map. It should say "Mountains". Press X and Supreme Kai should talk about "Wicked Magic". (Broly) Then continue on with your journey. Instead of K. Buu, you will fight Broly. Then you'll get the invitation from Gotenks. Before you fight, the dot will be at West City. Omega Shenron will talk, then fight you. you'll start to fight as Gogeta. After that, fight Gotenks.
(TIP, Dragon Turnback: Once you get Whirlingspin and Dragonthunder and the enemy is right in front of you, use Dragonthunder, then Whirlingspin, the enemy should bounce to you, then bounce back.)