4 Colors (in the real world, know under its trademarked name - 'Uno') is relatively new but also very popular cards game that appeals to both kids and older audience. It may be interesting to know that Uno was invented by a guy named Merle Robbins, barber from Ohio in 1971, and it was a result of his argue with his son about some other cards game rules. Later, rights for the game were sold to International Games. Up to day, the game was sold in 151 millions of copies. So, it seems that it's quite popular :) Have fun with '4 colors' (Uno), but also try our other card games.
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