I could spend hours talking about favourite franchises here, so let's just look at some highlights that came up as I was writing this
Crash Boom Bang (Nintendo DS)
It's not even a contest anymore, if I had to make a list of "Worst stuff I have ever played", that would be at the bottom *easily*, not even just worst game in its series. It is non-functional at best and actively harmful to play. I still can't wait to play its Japan-only sequel though! It can't be any worse... right?
Wily & Right no RockBoard (Famicom)
It's not like I have much confidence in calling this "the worst game in the series", but it's definitely the most stupid of them all, so it kind of qualifies for me. Have you ever wanted to play Monopoly with Megaman characters, and have it be more boring? Because if you do, I got the game for you!
Sonic Jam (Game.com)
Say what you will about all the other infamously terrible Sonic games, at least they *are* games, they can be played most of the time, and have music that doesn't drive one to insanity, this one doesn't even count as a game.
Devil May Cry 2 (Playstation 2)
Some people may swear by the DmC reboot being worse, but at least the reboot can be genuinely fun if you ignore its atrociously awful story and has some actually nice ideas. This game doesn't even have that, as once you ignore the bad story, you get a barely functional gameplay loop where you *may* be able to do cool things, but they don't feel good to perform at all due to very questionable design choices.