All Star Tennis '99 Gameshark Codes (USA)
This page contains the Gameshark codes that I have for All Star Tennis '99, a game for the Nintendo 64. If you are playing on a physical N64 console then you will need to purchase a physical Gameshark or Xploder device to use the codes you find on this page and website. From what I have read and seen both of these cheat devices have cross compatibility.
For those of you out there using an Emulator such as Project 64, you can typically add cheats by clicking on a tab at the top of your Emulator that will lead you to a section where you can add codes. Anyone who is using the Project 64 Emulator should check out my How to Setup Codes on Project 64 Guide for more information on how to get cheats working.
If you don't see the cheats you're looking for on this page I recommend you return to my All Star Tennis '99 Guides and Walkthroughs page and choose a different section.
Activator 1 P1: D016E1D0 00??
Activator 2 P1: D016E1D1 00??
Dual Activator P1: D116E1D0 ????
Activator 1 P2: D016E1D7 00??
Activator 2 P2: D116E1D6 00??
Dual Activator P2: D016E1D1 ????
P2 Press L For P1 Score Modifier
D016E1D7 0020
801C7260 00??
P2 Press L For P1 Score Modifier
D016E1D7 0010
801C7261 00??