Oblivion developer, 20 years later, still remembers a quest that the game completed by itself

The Elder Scrolls IV: Oblivion Remastered art lead Dan Lee shared a story that explains why Bethesda Game Studios games are still considered a benchmark for living open worlds. Lee joined the studio shortly after the original Oblivion was announced and worked as a playtester early on.

While testing NPC behavior systems, Lee learned about the hunger mechanic, which has characters look for food on their own when they get hungry.

One quest required sneaking onto a boat to kill a captain, after which his second in command and another enemy would ambush the player. Instead of tackling the encounter head-on, Lee decided to turn the mechanic against the NPC himself.

So I heard about this eating mechanic, I snuck through the ship into his room, took all the food, left a poison apple in his pocket, and then left.

A bit later, a notification popped up saying the quest was complete – the captain was dead. Lee immediately ran to designer Emil Pagliarulo and said he couldn't believe he'd accounted for this. Pagliarulo answer turned out to be far more interesting than any scripted outcome:

I didn't, that was just the game systems working.

Lee said that quest has stuck with him for more than two decades because of the way the game systems "interplay" and result in "unexpected fun."