‘Tower Toppler’ was basically the American version of Nebulus…. and none other than John Romero of Doom fame was beind it apparently. Nebulus basically involved you controlling a frog which had to be guided up a tower, all the way to the top without getting killed.
According to Keltic Danor, this game was released as Tower Toppler in the states, and it was Nebulus. So it seems that John Romero was set to program a new version, but that fell through so the UK version was bought up instead.
It’s not known how far John Romero actually got with his version of the game, or what it was going to be like.
Hopefully more information soon….
Contributions: Keltic Danor