- Scandium is a chemical element with the symbol Sc and atomic number 21. It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth element, together with yttrium and the lanthanides. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia.
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Tetris® is the addictive puzzle game that started it all, embracing our universal desire to create order out of chaos. The Tetris game was created by Alexey Pajitnov in 1984—the product of Alexey’s computer programming experience and his love of puzzles. In the decades to follow, Tetris became one of the most successful and recognizable video games, appearing on nearly every gaming platform available. This page is the official destination for free online single-player Tetris. Click PLAY to start playing one of the world’s most popular puzzle games now!