The Dark Eye
Compared to "Advanced Dungeons and Dragons" or "The Dark Eye" (editions 1, 2 and 3), "Midgard" (and "The Dark Eye" editions 4 and 5) does not emphasise the character's level very much. Characters may learn at any time, only limited by their experience points. The level increases when the player has spent a certain amount of experience points. He or she may then spend some more experience points to increase the number of exhaustion points and there's a slight chance (determined by D100) that the score of one of the base attributes increases.