One of our recent house rules are on character creation. We have always rolled 4d6 *6. Now the players are allowed to split the dice anyway they want, but still with a maximum of 18. So it could be: 3d6, 3d6, 5d6, 4d6, 4d6 and 4d6.
Our fumble system is nice. It has always bugged me that a demigod could fumble, that shouldn't happen, but the fubmle is still a funny feature. the way I changed the system was, that a natural 1 allows you to roll a d100, with a reduction to your fumble % by 10/lvl. eg. a lvl 3 character whould avoid the fumble at 70% and up. So a 10 lvl character can't fumble or reduce the % decrease by 1/lvl from lvl 10 and up.
