One of the most annoying things in Sins is that once a player quits, the AI stays and continues plays. So if you are playing a team game, it essentially turns into a bunch of 1v1s until u kill off the AI. and this is particularly annoying if ur ally is losing and u want to go help him and u have defeated ur opponent. but wait! u cant, cus the moment you leave, the AI decides to send over his left over fleet and go on the offensive (and it takes a lil bit of time be4 u kill off the AI if he has 5-6 planets sittin around).

I liked it better in other RTs games that once sum1 quits the AI jus stays staionary.