Early video games were both glitchier than we remember and more difficult, since you basically had to spent hours in intense eye-hand coordination while battling zombie enemies. Centipede upped the ante with a more complex board and more difficult levels, so you can end up spending days or weeks of your life without showering while you try to beat it. At least it no longer costs a quarter (probably $1.50 in today's money) to get slaughtered by pixels.

IM A MAN NOT A MACHINE.

A fast-paced shooter with more strategy to it than most of this vintage.