Without using air bubbles underwater, the playable character will eventually drown, thus causing the player to lose a life. The extended time underwater that air bubbles grant the player is limited though, and the playable character will eventually start to run out of air once more. This will make the playable character automatically inhale the air bubble and cause it to vanish, thus restoring the playable character's oxygen supply and extending the time the player can remain underwater. When the player has to stay underwater for longer periods of time without drowning, they can make their character make physical contact with an air bubble before running out of air. Once an air bubble has emerged, it starts rising up towards the surface until it reaches it or simply disperses. However, there have been cases where air bubbles have emerged from other sources. In gameplay, they periodically rise in small clusters from cracks in the submerged floors. They do not appear in all underwater sections, though. Within these levels, air bubbles can always be found in the sections of the Zones that are submerged in water or similar liquids such as Mega Mack. They appear exclusively in underwater-themed levels. 2.16.2 Sonic the Hedgehog 4: Episode IIĪkin to their real-life counterparts, the air bubbles are large bubbles filled with oxygen.2.15 Sonic Chronicles: The Dark Brotherhood.2.10 Sonic the Hedgehog Pocket Adventure.

Porting sonic 3 sprites in sonic 1