No Mercy is a mod which gets rid of a level scaling in TES: OBLIVION. This adds realism because in real life the world isn't all about you. You can come across all creatures at any level, loot at any level, etc.
The mod does not add any new creatures, it just does what it says.
WIP
I'm currently working on version 2, which will give if not all npcs a static level.
Download (Nexus) - http://oblivion.nexusmods.com/mods/43361
Not much info I know :/