Plane Sailing
Astral Admin - Mwahahaha!
I@m really taken by the True20 mechanism of 'level up when its right for the campaign' now.
Otherwise, my favourite xp based mechanism has been the one proposed by Monte Cook in Call of Cthulhu d20, which basically says set up 6-8 story goals for an adventure (say), and then give 300xp * level / party members for achieving each story goal. Basically the idea is that every 13.33 story goals achieved the party will increase in level.
Killing monsters doesn't necessary achieve a story goal, although in some cases surviving a monster might, similarly bypassing a monster.
The only tricky bit is setting up good story goals in advance and ensuring that they are discoverable (or at least that you cover potential major branches in the story)
Otherwise, my favourite xp based mechanism has been the one proposed by Monte Cook in Call of Cthulhu d20, which basically says set up 6-8 story goals for an adventure (say), and then give 300xp * level / party members for achieving each story goal. Basically the idea is that every 13.33 story goals achieved the party will increase in level.
Killing monsters doesn't necessary achieve a story goal, although in some cases surviving a monster might, similarly bypassing a monster.
The only tricky bit is setting up good story goals in advance and ensuring that they are discoverable (or at least that you cover potential major branches in the story)