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Here are some popular NES sports game cheat codes that were used to enhance the gaming experience or unlock hidden features:
1. Tecmo Bowl (NES) – Unlock All Teams
- Code: On the title screen, press Up, Down, Left, Right, A, B to unlock all teams in Tecmo Bowl.
- This cheat allows you to choose any of the teams, including the previously locked ones.
2. Super Mario Bros. 3: Tennis Mode (NES)
- Code: In Super Mario Bros. 3, you can unlock a hidden tennis mini-game.
- Cheat: During the map screen, press Up, Down, Left, Right, A, B to enter tennis mode.
3. Blades of Steel (NES) – Fight in the Game
- Code: While playing, press Left + Right on the controller at the same time to trigger a fight during the hockey game.
- This cheat activates the game’s hidden fighting minigame.
4. Baseball Stars (NES) – Max Stats
- Code: During gameplay, press Up, Down, Left, Right, A, B on the title screen to max out your player’s stats.
- This code boosts your team’s stats to their highest possible values for better performance in the game.
5. Ice Hockey (NES) – Change Player Size
- Cheat: During a game, press Select + Start to toggle between small, medium, and large player sizes.
- This cheat alters the players’ size, which impacts speed and strength.
6. Punch-Out!! (NES) – Code for Mike Tyson
- Code: At the title screen, press Left, Right, Left, Right, A, B, A, B to fight against Mike Tyson directly.
- This cheat skips all the other boxers and sends you straight to the infamous final match against Mike Tyson.
7. Tecmo Super Bowl (NES) – 99 Points in Game
- Code: To set the score to 99 points, at the title screen, press Left, Right, Left, Right, A, B.
- This cheat modifies the maximum score for an exciting, long-lasting game.
8. Track & Field II (NES) – Infinite Energy
- Code: In the game’s menu, input the following sequence: Up, Down, Left, Right, A, B to give your athlete infinite energy.
- This makes it easier to perform in track and field events without worrying about stamina depletion.
9. NFL Football (NES) – Super Team
- Code: On the title screen, press Up, Down, Left, Right, A, B to access a super team that has high stats in all areas (speed, strength, etc.).
- This cheat makes the game much easier as your team dominates every opponent.
10. Double Dribble (NES) – 99 Points
- Code: During a game, press Up, Down, Left, Right, A + B + Start to unlock the ability to score 99 points in a game.
- This makes it easier to have a high-scoring game without limitations.
11. Golf (NES) – Hole-in-One
- Cheat: In Golf, press Up + A + B to land a hole-in-one on any hole. This cheat gives you an automatic win for any hole you play.
12. RBI Baseball (NES) – Unlimited Home Runs
- Code: While playing the game, press Up, Down, Left, Right, A, B to unlock unlimited home runs.
- This cheat allows your team to score home runs on every hit, making it easier to win.
13. Pro Wrestling (NES) – Unlock New Wrestlers
- Code: In the title screen, press Up, Down, Left, Right, A, B to unlock new wrestlers to choose from.
- This cheat allows players to pick from a wider variety of characters for more dynamic wrestling matches.
14. Excitebike (NES) – Mirror Mode
- Code: At the game selection screen, press Up, Down, Left, Right and hold A to unlock the mirror track, where the race layout is reversed.
- This adds a fun challenge to the racing experience, as players race on a flipped version of the track.
15. WrestleMania (NES) – Unlock All Wrestlers
- Code: At the title screen, press Up, Down, Left, Right, A, B, Start to unlock all available wrestlers.
- This cheat gives you immediate access to the entire roster of characters.
16. Super Dodge Ball (NES) – Super Team
- Code: During the game, press Up, Down, Left, Right on the controller to create a super team with enhanced strength, speed, and power.
- This cheat makes it easier to win games in Super Dodge Ball.
17. 10-Yard Fight (NES) – Unlimited Time
- Cheat: During the game, press Up, Down, Left, Right to unlock unlimited game time, allowing you to play without a timer counting down.
18. Soccer (NES) – Super Speed
- Code: In the game, press Up, Down, Left, Right to activate super speed for your players.
- This cheat makes it easier to move around the field quickly, gaining an advantage in gameplay.
19. NBA Jam (NES) – Secret Characters
- Code: On the title screen, input the following cheat code: Up, Down, Left, Right, A + B to unlock secret characters for play.
- This cheat unlocks hidden characters, adding more variety and fun to the game.
20. Soccer (NES) – Infinite Health
- Code: During a match, press A + B at the same time to give your players infinite health, allowing them to stay on the field for longer periods without tiring.
These NES sports game cheat codes were commonly used to unlock hidden features, give players an edge, or just add more fun and variety to the gameplay experience. Many of these cheats have become iconic over time and are still remembered fondly by retro gaming enthusiasts.