Blocian Era

In the history of the board game Blokus, the Blocian Era lasted from ~5000 BB, to 997 BB. It began with the invention of Rockus by the ancient civilization the Blocians, and ended with the modernization of Rockus into its current iteration, Blokus.

Inception
Rockus began with the (senile) king of the Blocians mandating that there should be a national board-game, sport, currency, and past-time all rolled into the same thing. The result was a board game called Rockus, which eventually evolved into Blokus. At the time, the royal family owned the only Rockus piece and board factory.

Contrary to the king's contemporaries beliefs, Rockus was a massive success. As a result, tourism soared, and the government made a "shit load of money" according to Blokus historian Dirty Old Bastard[1]. This lead to the golden age of Rockus for the next 4000 years.

War with the Bedrockians
The Bedrockians, distant cousins of the Bloacians, saw the success of Rockus and decided to invade several major Bloacian trading ports. Although the Bedrockians were successful at first, the Bloacians quickly responded, resulting in a century-long war, which ended in the assimilation of the Bedrockians into the Bloacians.

Although the Blocians did win, they sustained heavy losses, and an economic recession began as a result of the war. This, combined with several other similar claims from nearby kingdoms (including the React-Rockus, Roman-Rockus, and Gandhi-Rockus wars), and a declining popularity in Rockus, their military and the Blocian defense forces gradually weakened over 1000 years.

The fall of the Blocians
In ~1114 BB, a military coup ended in the death of the king his son, the only true heir to the throne. Following the coup, many members of the pre-coup nobility and several members of the military, most notably Special Snowflake, broke away from the Bloacians and formed their own nation, claiming to be the true Bloacians.

This finally culminated in the Vikings beginning their invasions of the Blocian territory in 1034 BB, which finally ended in with king Odin and his army storming the Blocian capital: Kustantinople in the year 997 BB.

Because of the Vikings sacking of Kustantinople and the destruction of all but a few traces of the Blocian civilization, Rockus was forgotten to the world for many centuries, until Bernard Tavitian rediscovered and remade Rockus.