[Question] Unique game mechanics -- The best and the worst

The most unique game in the world is Gitaroo Man. The soundtrack varies and dips into every different music genre imaginable. The gameplay feels strange because it's nothing you've experienced before. It's something you can't walk into already half knowing what you're doing because there's no experience from anything else to rely on.

Using the analogue stick along with the buttons to perform proper songs is just weird. There is nothing that comes close. The game is 100% completely original, with it's own style and own personality. Another is Mr. Mosquito. Both for PS2.

The worst unique game would be wordimagesoundplay for the PS2. It was released in Japan, supposedly only with 5000 copies available. It's basically just a glorified equalizer that tries to act like a game just because it has interactivity. The game doesn't make any sense whatsoever. It's just "you press buttons, things happen". Unique? Yes, I'd say it's unique. But it's poorly executed (you knew that line was coming) and it only raises heads for how odd it is.

Games like 塊魂 are a given that they're unique, in fact, I think it's the first game which comes to my mind when I think of unique games. Same for the stuff that's bound to be mentioned, so I'll list them now: Zone of the Enders 2, Rez, Odama, Cosmic Smash, Vib Ribbon, Vib Ripple, Mojib Ribbon, Odin Sphere, and so on. Many people seem to prefer unique games over the rest, which is why they're so sought after.

Along with Gitaroo Man, I think Intelligent Qube and Kula World (Roll Away in US) deserve a mention. Kula World was originally designed after someone in Finland (or Norway, I forget which) had a dream that he was a ball. He was going around on a grid collecting fruit and items while being in mid-air. So, they made a game out of it.

It doesn't make much sense but oh well, whatever. It's a good game and very fun. Intelligent Qube is another puzzle game which brings uniqueness to a new level, with it's fantastic puzzles and PERRRRRRRRRRFECT soundtrack. They ended up releasing I.Q Remix+ for the PS2 and I.Q Final for the PS1. I actually hate puzzle games but oh god, Kula World and IQ are just incredible.

Jam it back in, in the dark.

I don't think people know Mr. Mosquito even exists little less it being their first game which springs to mind when they're asked what they consider their favourite "unique game".

I didn't even know it existed until last year actually. Same with Mad Maestro.

There's nowhere I can't reach.