XJump

a.k.a. Falling Tower

published by author in 1997, running on Linux

type: platformer
perspective: side view
player options: single player

other: Freeware
languages: eng other

Official description

Xjump is a jumping game where you are in a Falling Tower. The floor you are standing on is sinking with the rest of the building; you will die once the floor gives way (disappears under the bottom of the display). To survive, you have to jump onto the upper floors of the tower. Because the entire tower is sinking, the upper floors will soon collapse, too, so you have to keep on jumping to higher floors.
Your score is counted by how many floors you jump before you either fall off while trying to reach the next floor, or the floor you are standing on collapses.