Tap the screen to strike the first ball in '3DMarble'. Guide your shot to make a carom, where your ball hits at least two others. Score points for each successful carom. Use the sides of the play area to ricochet your ball towards others for tactical plays. Monitor the 3D perspective to estimate angles and power accurately. Advance through the game by achieving the set score in each level. Prevent missing the carom to retain your momentum. Master your techniques to access more challenging levels with greater point objectives.