but it is nice to have 600+ turns like i do so here is how u do it.
1) find imperial_campaign file.
Medieval2TotalWar/data/world/maps/campaign/imperial_campaign
2) the open the descr_strat with notepad or wordpad.
3) u should see which factions u can play as and under them should be starting year and end date, and timescale. i start out in 180AD and end at 1530AD with a timescale of 0.50
way to many turns really but its fun. think i am gunna change the timescale back to 2.00
i am in the 600 turns with just takeing one zero out of the 1080.
make sure u backup the file before playing with it or u will have to reinstall the game.
have fun
Ahh. Thanks mate