Unlock jak 1 2 and 3 and ratchet you get your memory card and scan the memery card from the game then you get them

To unlock:
Daxter= play for 5 hours in total (50,000 orbs)
G.T blitz= finish the game
Kiera= finish the game
Pecker= play 10 hours in total (60,000 orbs)
Hero mode= finish 100% of the game
Daxtermobile= use your usb cable from your PSP to your PS2

Here are a few things you might want to know...

Hit the "X" button right before the timer hits zero, this is a way you can get a little extra boost at the begining of the race.

Another way to earn extra boost during races, is useing the power slides, they are useful because not only do they help you cut corners, it also helps rechage your boost in the process.

And I know this last one may be a bit obvious, but take short cuts, it can really make a difference in who is going to come out in first place.

Well, thanks for your tiem, and i really hope these tips will help.

As soon as it says go press x, then you'll get a boost.

This is maybe not a cheat but it is VERY usefull...
Select multiplayer. Then choose one of your favorite game. Then choose for 1 or 2 CPU´s. And now...RACE. If your win or lose , YOU GET AUTOMACLEY MONEY !!!!!

P.S. Sorry for the spelling...

Jak One: Have a saved file from that game,he will be in the exibition players.

Jak Two:Have a saved file from that game,he will be in the exibition players.

Jak Three:Have a saved file from that game,he will be in the exibition players.

Ratchet from Ratchet: Deadlocked:Have a saved file from that game,he will be in the exibition players.