The Elder Scrolls IV: Oblivion has approximately 223 quests in the original base game, which includes 213 quests with journal entries and 10 without

. When including official downloadable content (DLC), such as Knights of the Nine and other smaller official downloads, an additional 19 quests are added

. The Shivering Isles expansion adds 35 more quests

. In total, including all DLCs, a single character can complete up to around 248 to 251 quests, though some quests conflict or compete, so not all can be completed in one playthrough

. A breakdown of quest counts from the base game and DLCs is roughly as follows:

• Base game: 223 quests
• Official downloads (including Knights of the Nine): 19 quests
• Shivering Isles expansion: 35 quests
• Total: Approximately 277 quests available, but about 248-251 can be completed by one character due to conflicts

The main questline alone consists of 18 quests in the base game

, and there are many faction, Daedric, side, and miscellaneous quests to explore. In summary, Oblivion features over 220 quests in the base game, with additional quests from DLCs bringing the total to around 250-280, with about 248-251 being completable in a single playthrough.