This game has a hidden sound test.
Mappy Kids is what happens when Mappy gets busy.
This game has a very odd cheat enabling procedure. While the title screen is waiting for any button to be pressed before the demo sequence, holding some buttons increases the internal counters, which is compared with some values after starting a game.
Counters are 8-bit values that cycle repeatedly from 00 - FF, each cycle taking about 8 seconds. To trigger the cheat, hold the corresponding buttons for the particular time for each button in any order.
Obviously, it's difficult enough to trigger these cheats without any visual guidance.
Press Up / Down to select a music/sound effect, press A to play it.
Extra 20 Lives
- Hold B on Controller 1 for about 3-4 seconds (counter value should be between 5A - 78).
|The Mappy series|
|NES||Mappy-Land • Mappy Kids|