Were any of the post-Naughty Dog Crash games any good?
Big huge mega Crash fan here. (Obviously)
The console platformers (WoC, Twinsanity, Titans, Mutant) are all varying levels of decent to great if you like Crash.
Wrath of Cortex is "Warped Again with Weird Physics" but if you can get past that it has redeeming qualities. It relegates the Naughty Dog rogues gallery to invincible obstacles in the main stages and replaces them with Crunch, who you fight 5 times. He uses Elemental Masks to change his form in each fight, the Elemental Masks are the story highlight, as an R. Lee Ermey voiced mask literally shows up at one point to scream "LEAVE MY LEVELS ALONE" at you and immediately leave.
Twinsanity is decent but it's really shoddily put together and there are lots of dropped plotlines and suffers the opposite problem of Twinsanity. It crams everyone and everything it can in, but it suffers the same result -- no one gets any real screen time and no one really does anything of consequence. The villains defeat the most powerful characters in the game's universe and then lose a hand to hand fight in a giant robot. If you can ignore the lopsided story, the meat of the game and the couple of new things they try make the legitimately 2-4 hour experience worth it if you find it cheap. The humor feels ripped right from one of the B-List CN/Nick shows of the 90s but has some high points.
Crash of the Titans is a fun platformer beatemup hybrid. If you can get past the change in character designs, it's good. I even think it's great. I again disagree with the above characterization of "for the kiddies" and "lol so random!" humor. On the hardest difficulty the game is incredibly punishing and the Titan hijacking mechanic can be a really rewarding chaining mechanic. The humor isn't random by my characterization. It can be immature and certainly irreverent but no more 'random' than any cartoon of the 2000s. The game just simply makes no bones about the fact it's a comedy. SPECIAL NOTE: If you can play it in co-op, it goes from great to really great. That's when the game is at its most fun. Play it on a console that doesn't require you to waggle.
Mind Over Mutant is Crash of the Titans but instead of the 60/40 in favor of brawling, it's 70/30 in favor of platforming, and for whatever reason, it's a metroidvania in 3D. You need to take monsters different places and backtrack a lot. It's okay off the back of Titans (especially since it's a direct sequel in all the most direct ways) but on its own it's weaker.
As for the handhelds, things range from great all the way down to downright garbage.
Crash of the Titans DS is a standout game in that it melds the console game with the Naughty Dog formula and adds back in the crate puzzles and stuff. It's way less funny and downright corny though. The story is a jankier weird fork of the console game where Cortex creates a giant disco dancing robot to step on the Islands. That's seriously it. But the gameplay is really really good.
The Vicarious Visions platformers on the GBA are decent. The stories are too serious though. Raaargh, villains! They're also shorter than the Naughty Dog games by 5-10 levels each.
Stay far the fuck away from Crash: Boom Bang and Crash Purple/Spyro Orange, etc.
The cell phone games are interesting but impossible to get these days. Mutant Island is actually really really good for a 2D Java phone game. The iOS racers are delisted and not that great especially now that the amazing Nitro-Fueled exists.
