In the early 1980's I wrote an Atari 800 game called Boulder Dash.
Thanks to YouTube, you can see movies of the original game.
30+ years later, Boulder Dash is still available on Mac, Windows, iOS and Android.
Official Boulder Dash Site.
Scoring the boulder dash theme music.
Boulder Dash related sites on the web.
Disclaimer: some of these sites may contain material, or links to material that violate intellectual property rights. My links to these pages do not condone or endorse these violations.