Demolition - modifications:

- Altered the "drop bomb" control to SPACE.
- Defined a bomb graphic (an upside-down shuttle from Shuttle Master, Sinclair Programs March/April 1983.)
- Altered the gameplay so that the advancing walls are continuous. (May not have been intentional.)
- Animated the ".....AAAARGHHHH....." sequence and added a "play again" option.
