toppler binary package in Ubuntu Bionic amd64

 Toppler is an almost complete reimplementation of the old game known as
 Tower Toppler or Nebulus.
 .
 The target of the game is to reach the target door of each of the 8 towers
 in currently 2 missions with this little green animal. This door is usually
 at the very top of the tower.
 .
 But finding the way by using elevators and walking through a maze of doors
 and platforms is not the only problem you have to solve. There are a bunch
 of other creatures living on the tower that will hinder you to reach your
 target by pushing you over the edge of the platforms.

Source package