Playstation Underground Demo Discs: Jampack Summer '99 Codebreaker Codes (NTSC-U)
This page contains CodeBreaker cheat codes for Playstation Underground Demo Discs: Jampack Summer '99 (NTSC-U) for the Playstation 1. Depending on if you're playing this game on a physical console or an emulator will determine how you use the codes found on this page. People using a physical console will need to purchase a physical CodeBreaker device to use the codes.
Anyone who is using an Emulator will have a much easier time getting these codes to work (assuming your Emulator supports them). One of the most popular Emulators for the Ps1 is ePSXe and if you'd like to learn how to use the codes on this page for that Emulator, check out my how to get cheat codes to work with ePSXe guide. If you don't see the code you want on this page I recommend you return to my Playstation Underground Demo Discs Index and choose a different section.
(3Xtreme) Always 1st Place: 801F550A 0001
(3Xtreme) Lots of Points: 801F5AFC FFFF
(Ape Escape) Infinite Health: 800F3508 0005
(Ape Escape) Infinite Lives: 800FB6C0 0006
(Ape Escape) Infinite Air: 800FBFE4 0258
(Ape Escape) Only Need 1 Monkey To End Level: 800FB6E2 0005
(MLB 2000) Infinite Outs: 800ABE90 0000
(MLB 2000) Infinite Strikes: 800ABE92 0000
(MLB 2000) 99 Points: 80099864 FFFF
(Ridge Racer Type 4) Infinite Time: 800B41D4 21F2
(Tony Hawk's Pro Skater) Play As Chad Muska: 8009CAC8 0002
Use this on one player only. Highlight Tony Hawk then turn the code on the instant you select him.
When playing as Chad Muska do not press Up + Square when doing tricks or the game will freeze
(Tony Hawk's Pro Skater) P1 Extra Time (Tony): 800AAA46 000F
For these codes the time isn't infinite but it's 200+
(Tony Hawk's Pro Skater) P1 Extra Time (Bob): 800AAA7E 000F
For these codes the time isn't infinite but it's 200+
(Tony Hawk's Pro Skater) Max Score: 800AAFEC FFFF
(Xena Warrior Princess) Infinite Health: 800EE080 07FF
(Ape Escape) Max Gold Triangles
D00FB6E4 0000
800FB6E4 0063
(Tony Hawk's Pro Skater) 2 Player Game Extra Time
For these codes the time isn't infinite but it's 200+
800AADDE 000F
800AC07E 000F