Ever since BioShock creator Ken Levine shuttered Irrational Games, fans have been waiting patiently to see what the critically-acclaimed game developer would do next. Levine is still being secretive when it comes to his upcoming narrative-driven gaming project, but the BioShock creator let a few details slip during the EGX Rezzed event in London, like the fact that the game is inspired by Middle-earth: Shadow of Mordor’s Nemesis system.

For the uninitiated, the Nemesis system is a feature in Shadow of Mordor that allows characters in the game to remember the actions of the player character. So, for example, if the player character in Shadow of Mordor attacks an enemy Uruk but doesn’t kill him, that Uruk could rise through the ranks and actively seek revenge for being attacked. According to Levine, his new game will employ an even more advanced take on this idea.