Hyper Sports (Arcade)

In Hyper Sports, Konami alternates the button-mashing goodness of Track & Field with more intricate, timing-based events, thereby saving the world's arcade owners thousands of dollars in repairs.

Unused Graphics
A slightly different "GO" balloon is stored in the object graphics ROM, horizontally flipped.

Unused Text
At is a line of text that could easily be mistaken for a word salad: QUALIFY IS BACK UP RAM

The line "QUALIFY IS DIP SWITCH" is displayed after the game boots up. This refers to the four(!) dip switches that are used to control the game's difficulty and qualifying scores. At one point, Konami planned to have an option to have the difficulty stored in NVRAM, saving cabinet owners the trouble of having to fiddle with four different switches, but this functionality seems to have been dropped from all versions of the game.