There are a number of Bubble Ghost conversions floating around, but the Commodore 64 version is arguably the best.

It has responsive controls and smooth movement, which you need for a tricky inertia-based game like this.

A classic puzzle/trap game!

Bubble Ghost on The King of Grabs:
Bubble Ghost Commodore 64 version
Bubble Ghost Atari ST version
Bubble Ghost Amstrad CPC version
Bubble Ghost Game Boy version

More: Bubble Ghost on Wikipedia

Bubble Ghost Commodore 64 Loading Screen

High score table. Game Options.

An easy couple of levels to begin with.

Then it gets more tricky.

The fans blow your bubble off course, so be careful!

That upset ghost has just lost his bubble.

Blowing bubbles upside down.

Trickier than it looks!

Bubble Ghost: a simple but deviously fun game on the Commodore 64.