Windows 1.0 officially released to the public 40 years ago today (November 20), and despite its age, still has some common similarities with what users can expect from the operating system today.

You can now choose from three different activity levels for creatures: Relaxed, Normal, and Fierce. This can be changed at any time from Settings in Options (- Button). You can now take pictures with ...

Gray windows and simple graphics make CivIdle a 4X strategy game you could get away with playing on office time, back in 2001 anyway.

First developed in 1981 by computer scientist Chase Bishop, the software project that would eventually become Windows actually started life under a far wonkier name: "Interface ...