Atari’s 1984 arcade hit was a very early proponent of isometric (meaning: “equal measure”) graphics, with a viewpoint that takes an overhead, three-quarter perspective of the game play area, and as a result was a huge influence on many games that followed it. It wasn’t the FIRST isometric game ever made, but it was certainly one of the first really popular ones. Marble Madness still stands up extremely well today, being very playable and beautifully constructed.

More: https://en.wikipedia.org/wiki/Marble_Madness

Marble Madness arcade title screen.

The angular level designs in Marble Madness are stunning.

About to fall off the edge…

Some levels give alternative routes to take.

A dip, followed by a hole. More challenging than you may think!

Not sure what those green enemies are called, but they got me.