It’s been pretty hit or miss the last few years, but black ops 6 is definitely worth it. The noncanon scene I mentioned is in Black Ops Cold War, which is about 4 years old now (Bo6 is also it’s direct sequel). It’s a lot of fun, but to unlock it you’ll have to solve some tricky and well hidden but simple puzzles throughout the whole story. It might take a few tries to get it, but it’s more satisfying than the canon ending imo.