- Crystal Castles (Atari 2600) (Internet Archive)
Bentley Bear is trapped in the Crystal Castles! To get out, he will need to collect all of the gems located throughout the castle. The game is played with an isometric view of the multi platformed castle. When Bentley collects all of the gems on the current castle, he will move on to the next, more difficult castle. Wandering throughout the castles are a wide variety of dangerous creatures, which Bentley should avoid. From time to time, a magic hat will appear. If Bentley collects the hat, he will temporarily be invincible to the castles inhabitants.
- Ernst Zermelo (Wikipedia)
Ernst Friedrich Ferdinand Zermelo (/zɜːrˈmɛloʊ/, German: [tsɛɐ̯ˈmeːlo]; 27 July 1871 – 21 May 1953) was a German logician and mathematician, whose work has major implications for the foundations of mathematics. He is known for his role in developing Zermelo–Fraenkel axiomatic set theory and his proof of the well-ordering theorem. Furthermore, his 1929 work on ranking chess players is the first description of a model for pairwise comparison that continues to have a profound impact on various applied fields utilizing this method.