They've done a series of these NES-themed demos of their fuzzer. What's neat is that they're not just mechanically applying the same techniques to new games!

They've done a series of these NES-themed demos of their fuzzer. What's neat is that they're not just mechanically applying the same techniques to new games! Each game has been harder to fuzz (larger state space, implicit constraints in gameplay, etc). So they keep inventing new techniques.