[Lawtan]

Ah...
I somewhat forgot the "good customization"
And half the time, I mute game music and play my own. XD

O.O postgame content?

Cool. The only arenas I recall are the Neverwinter Nights arenas on multiplayer games.

Neverwinter Nights mod = making a game modification that incorporates the original Neverwinter Nights story, characters (possibly some abilities) into Skyrim.

Mod is short for modification. Modding communities add content to games, from quests, to characters, to weapons, to gameplay (hardest), to effects, to better graphics/appearances, to entire new worlds.