Google and Tel Aviv University researchers present GameNGen, the first game engine powered entirely by an AI diffusion model. To demonstrate the capacity for high-quality, real-time interaction with complex environments, the researchers had GameNGen simulate the FPS classic DOOM (1993) at over 20 frames per second on a single TPU. The results are so good, human raters can barely distinguish short clips of the game from clips of the simulation, the researchers argue in their paper.