Good start, unbearable midgame.

Good and fun early game! Easy to ease players into modded minecraft, but post nether, the game simply becomes unfun. The Great Below spawns barely any osmium, so mekanism is nearly an impossibility without permanent invisibility from iron's spells. Some bosses are either bugged or simply deal too much damage, especially for that stage of the game. Some bosses that are required to enter the end (most cataclysm bosses) are extremely buffed to the point of being nigh unkillable. It simply isn't fun anymore to play this.