Simon says

Simon Says (or Simple Simon Says) is a child's game for 3 or more players where 1 player takes the role of "Simon" and issues instructions (usually physical actions such as "jump in the air" or "stick out your tongue") to the other players, which should only be followed if prefaced with the phrase "Simon says", for example, "Simon says, jump in the air". Players are eliminated from the game by either following instructions that are not immediately preceded by the phrase, or by failing to follow an instruction which does include the phrase "Simon says". It is the ability to distinguish between genuine and fake commands, rather than physical ability, that usually matters in the game; in most cases, the action just needs to be attempted.

The object for the player acting as Simon is to get all the other players out as quickly as possible; the winner of the game is usually the last player who has successfully followed all of the given commands. Occasionally however, 2 or more of the last players may all be eliminated by following a command without "Simon Says", thus resulting in Simon winning the game.

The game is well embedded in popular culture, with numerous references in films, music and literature.

The tradition behind the use of 'Simon' as the controller of the game may trace back to the year 1264, when at the Battle of Lewes, Simon de Montfort captured King Henry III and his son, the future King Edward I. For the next year, any order Henry III gave could have been countermanded by de Montfort, until his defeat at the Battle of Evesham. It is also possible that the name has no such meaning, and Simon derives simply from the alliterative effect.

This game has translated across multiple cultures from seemingly common routes and some international versions also use the name Simon such as:

A version also exists in India, Pakistan, Germany, Slovakia and Hungary where an analogy to what can fly and what cannot is emphasized instead of Simon saying or not, i.e. "Chidiya ud" (Hindi) which translates to Bird fly or "Alle Vögel fliegen hoch" (German) which is "All birds fly high". The term 'bird' can then be replaced with a thing that cannot fly. These games are usually played more with gestures than actual jumping.

In a Swedish version, Gör si, gör så ("Do this, do thus"), the leader says either "do this" or "do thus" while performing an action. For failing to follow the correct command, "do this", or following the wrong command, "do thus", a child must sit down until a new leader is chosen.

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Wikipedia