Com base no enredo descrito na Wikipedia , o programa e o jogo online divergem na Temporada 2 do BSG, Episódio 12; Parte 2 do navio de ressurreição .
A sinopse do jogo oferece um número significativo de spoilers nas duas primeiras temporadas;
Man created the Cylons. The Cylons evolved. The Cylons Rebelled. The game begins 40 years after the first Cylon war. The Cylons paid a visit to the Twelve Colonies to annihilate the humans and take their resources. The aging Battlestar Galactica managed to escape the attack, gather a fleet of civilian ships, and set out for the home of the legendary 13th Colony (Earth). The Cylons pursued Battlestar Galactica for months until Battlestar Galactica reunited with Pegasus, the other survivor from the Cylon attack. Together, they were strong enough to retaliate and destroy the Cylon’s Resurrection Ship.
E abaixo dessa linha, o enredo diverge da série de TV;
When the Cylons discovered that the humans destroyed the Resurrection Ship, they launched a colossal counter strike against the Colonial Fleet. The unsuspecting Colonials were forced to jump away to safety, but they suffered a mechanical malfunction in the process. A massive pulse of energy overloaded the FTL drives on both fleets, which triggered an uncontrolled jump that threw them off target.
In Battlestar Galactica Online, the Cylons and Colonials are stranded at the edge of one of the galactic arms. Both Colonial fleets are heavily damaged and low on critical resources. The race begins for the Colonials to repair and rearm their ships, escape and continue their quest for Earth before the Cylons gain enough strength to obliterate them once and for all.
É lógico que no mínimo você gostaria de ter visto todos os episódios que levaram ao ponto de divergência, especialmente aqueles relacionados ao ataque inicial às 12 colônias, o assédio da frota e a chegada de o Pégaso.