Here are some cheats and tips for the game The Flintstones.
Level select:
Press Up, Right, Right, Down three times, Left four times at the
title screen. Then, press Pause and hold 1 + 2 when game play begins.
Press the D-pad in one of the following directions to begin game
play at the corresponding level.
Level Direction
1 Up
2 Right
3 Down
4 Left