"Roughly estimated, how many quests are in the game and can we still join the factions that were found in Morrowind?

I don’t know what the exact number of quests is. We still measure our gameplay hours by the hundreds, so you can spend hundreds of hours exploring the game and doing all the quests. As far as factions, there are four guilds you can join in Oblivion: mages, fighters, thieves, and dark brotherhood (assassin’s guild). You can join each of them and experience their storylines and rise to the head of each guild, which has its own reward."