I would have to say Dead Space. Dead Space 1 was sooo scary, Dead Space 2 had better gameplay (wasn't as scary and the online was a ****ing mess ), but everything about Dead Space 3 was a wreck. Iffy online connection, too long of a story, and VERY repetitive gameplay. The ending boss was just stupid.
I admit Crash 3 wasn't horrible, but it doesn't beat out my fave 2.
I don't consider CTR to be a traditional Bandicoot, it's definitely good, I actually prefer it to Mario Kart 64.
Twinsanity is meh to me.
Oh yeah CTR is not traditional but for a kart racing spin off that blatantly took from Mario Kart it's kind of amazing. Like you said, it > MK64
Twinsanity is an average enough game gameplay-wise but I will always say that it was the best post-Naughty Dog CB game stylistically. The kooky music, the goofy humor, characterizations and the aesthetic all really suited CB. I can't believe it went from that to Crash Of The Titans which felt like a game with CB characters just pasted onto it and not built to be a CB game.
Pokemon Gold
Pokemon Silver
Pokemon Ruby
Pokemon Sapphire
Pokemon Emerald
Pokemon Diamond
Pokemon Pearl
Pokemon Platinum
Pokemon Black
Pokemon White
Pokemon X
Pokemon Y
Hilarious that people out there have wasted that much money on these. I feel sorry for them. Oh well...
), but everything about Dead Space 3 was a wreck. 
Iffy online connection, too long of a story, and VERY repetitive gameplay. The ending boss was just stupid.
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