The Script?

[burn_again]

Playing without the script will screw up the whole game. A lot of stuff depends on the script, traits, 4 turns per year, reforms, events to name just a few. Also the AI will run out of money and/or population after a few turns, so it won't put up any real resistance against the human player. Also the AI can't build gouvernments in conquered cities without the script and so can't recruit anything.
Without the script you're just playing vanilla RTW with EB map and units.