Steffen "Rini" Udluft (born April 1969) is a German Doomer and speedrunner. He is most notable for maintaining the Doom and Doom II pacifist collections. From 1997 to 2001 he submitted 193 demos to Compet-n, first as a keyboard only player, then transitioning to keyboard and mouse. At Compet-n he recorded a large number of undone respawn demos and the first ever nm100s movie of The Shores of Hell.