Comboll - Today's Time Waster
The goal of the game (if you can call it that) is to keep your sphere alive in a world of red and blue bars that horizontally scroll across the screen and accumulate as many points as possible. If you continue to bounce on bars of one color, you can build a combo, allowing you to earn a large number of points very quickly. In the event that you do fail to make a jump, your score is reset and you get to do it some more with almost no delay.
You can influence the jump and movement of your ball with the directional keys, allowing you to aim for bars of your chosen color. You can also "double jump" in mid air, letting you stretch some jumps to get where you want. The game comes in two modes, normal and extreme, but after playing the game for a bit we have come to the conclusion that the extreme mode is definitely better, since the bars disappear after you jump on them and hostile flying triangles will make it more difficult to make the jumps you want to.
All things said, if Comboll were an arcade game in the 70's, people would have spent all their quarters trying to play it.