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Game Boy · cheat codes
Tennis cheats & codes
32 codes for Tennis on the Game Boy, including Game Genie, GameShark codes.
Tennis Game Genie codes
How to use: Galoob's Game Genie plugged in between the console and the cartridge. Type the codes in on its start-up screen, then press Start. In emulators, add them through the cheat menu and choose the Game Genie format if asked.
| Effect | Code |
|---|---|
| Neither Player Scores Points (Switch Off To Score) | 001-DAD-3BA |
| 1 Game Needed To Win Set | 010-9CD-F76 |
| 2 Games Needed To Win Set | 020-9CD-F76 |
| 3 Games Needed To Win Set | 030-9CD-F76 |
| 4 Games Needed To Win Set | 040-9CD-F76 |
| 1st Point Takes You To 40 Points | 011-9AD-E66 |
| 2nd Point Takes You To 40 Points | 021-9AD-E66 |
| Neither Player Can Win Game | 000-99D-3BA
E00-74D-6E5
E00-7ED-6E5 |
| Ball Becomes Real Bouncy | 009
FFE |
| Computer Becomes Dumb | 009
66E |
| Ball Only Can Go Up & Down In Right Line | 008
FFE |
| Mario Calls "Fault" When P/c Throws Ball Up | 007
EFE |
| Computer Can't Move Backwards | 000
EFE |
Tennis GameShark codes
How to use: GameShark (sold as Action Replay outside North America) codes are entered on the device's menu or in your emulator's cheat menu. Some games need a "master code" or "must be on" code enabled first, so turn that on if a list includes one.
| Effect | Code |
|---|---|
| Player 1 1-Point Win | 010?DDC0 |
| Player 2 1-Point Win | 010?DEC0 |
Tennis More GameShark codes
How to use: GameShark (sold as Action Replay outside North America) codes are entered on the device's menu or in your emulator's cheat menu. Some games need a "master code" or "must be on" code enabled first, so turn that on if a list includes one.
| Effect | Code |
|---|---|
| Neither player scores points | 001-DAD-3BA |
| 1 game needed to win set | 010-9CD-F76 |
| 2 games needed to win set | 020-9CD-F76 |
| 3 games needed to win set | 030-9CD-F76 |
| 4 games needed to win set | 040-9CD-F76 |
| 1st point takes you to 40 points | 011-9AD-E66 |
| 2nd point takes you to 40 points | 021-9AD-E66 |
| Neither player can win game | 000-99D-3BA
E00-74D-6E5
E00-7ED-6E5 |
| P1 Has 40 Points | 0104DDC0 |
| Player 1 1-Point Win | 0101DDC0 |
| Player 2 1-Point Win | 0100DEC0 |
| Set 1 | 0106E0C0 |
| Set 2 | 0106E1C0 |
| Set 3 | 0106E2C0 |
| Set 1 | 0106E3C0 |
| Set 2 | 0106E4C0 |
| Set 3 | 0106E5C0 |
Using cheats today
Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.
Cheats can corrupt save files in rare cases, so back up your saves before experimenting.
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Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.