_ Direct execution of the game, without the need to download data and simulator.

_No ads.

_No need for internet.

_Compact and small data file.

_ Ability to save and recall the game at any point of the game you want.

Players control Bubble and at any time during gameplay they can command Squeak to either 'follow' or 'wait' for him. Squeak, who is invulnerable to enemies and enemy fire, has own AI and would help collect items or give Bubble a boost via piggy-back, letting Squeak toss him up to tall heights or by simply standing on top of Squeak's head. Collectable items include gems, coins, and a submersible icon which is necessary to play the shooter stages; some items can be picked up and carried to other locations such as springs, but the only items the player can pick up in the shooter stages were extra lives and Speed-ups. In both modes of gameplay (collecting and shooting), Bubble is equipped with unlimited ammunition, either stars or torpedoes.