Cave of Ordeal 3

Cave of Ordeal 3 is the third map in the Cave of Ordeal series, in Disgaea: Hour of Darkness. It is an ideal place for leveling up characters, as by default it has experience-boosting tiles and all the enemies are grouped in a 3-by-3 square, making it easy to damage them all at once with various attacks.

Plus, the monsters here are of the Galactic Demon class, which gives out the most Experience in Disgaea, while also only being able to move two spaces and attack from three spaces away. This gives Mages a huge advantage, since they can attack from further away than that.

However, your troops need to be at a decent power level stat-wise in order to gain the levels from the enemies, since Galactic Demons have the game's best DEF and RES. Axe and Gun-users have to be even stronger and much more durable, since most of the attacks at their disposal will only hit a single enemy.

In Disgaea: Afternoon of Darkness, Disgaea DS, Disgaea PC, and Disgaea 1 Complete, a variation of this map is present as the final version of the "Demonhall Mirror" stage, with stronger enemies and "EXP +100% Geo Effect instead of the "50%" version here, making this stage obsolete by then.