- The Russian Empire (Российская Империя) was the largest contiguous country in modern times, and the predecessor of the Soviet Union and present-day Russia. Reaching its maximum size during the mid-19th century, it included much of east and central Europe (including Finland and Poland), all of Siberia, much of Central Asia, briefly Alaska and even Fort Ross as far south as present-day California, though the degree of actual control by the tsarist authorities usually declined quite notably going from west to east. It also had a few concessions in China. Throughout world history, only the Mongol Empire and the British Empire have possessed a larger land area than Imperial Russia.
- Defender (1981 video game) (Wikipedia)
Defender is a horizontally scrolling shooter developed by Williams Electronics in 1980 and released as an arcade video game in 1981. The game is set on either an unnamed planet or city (depending on platform) where the player must defeat waves of invading aliens while protecting astronauts. Development was led by Eugene Jarvis, a pinball programmer at Williams; Defender was Jarvis’s first video game project and drew inspiration from Space Invaders and Asteroids. Defender was demonstrated in late 1980 and was released in March 1981. It was distributed in Japan by Taito.