My favorite leveling up system in any game is what they use for Final Fantasy Tactics. Tactics has the best leveling/skill system in any game, which is probably why it is my favorite game of all time.
As for my second favorite leveling system, I would have to choose the Fallout series and Oblivion (Minus the leveled enemies) I love both of those leveling systems, they are very in depth and very open so you can make exactly what you want, with no downfalls.
As for my second favorite leveling system, I would have to choose the Fallout series and Oblivion (Minus the leveled enemies) I love both of those leveling systems, they are very in depth and very open so you can make exactly what you want, with no downfalls.