It might just be because I haven't really played many games like it, but I was fairly disappointed in the Spiderman Demo from the 3DS eShop.
Firstly, there are only 10 uses. That's probably more than I'm ever going to need, but I hand it to my friends who don't have a 3DS to let them try it too. That's definitely a bad idea for the developers. The point of a demo is to let people try it out. Nobody is going to just play the same level of the demo and be satisfied and not buy the game. If they don't buy the game its because they don't like it, not because the developer put too many uses on the demo.
Secondly, the textures are straight out of N64. I'm not even kidding. I kept thinking of Goldeneye when I was looking at their faces. It was like they drew a face on a pantyhose and stretched it over a manikin. The walls and tables and objects were no better.
Speaking of manikins, all the characters moved about as smoothly as manikins too. There's this hilarious part where Spiderman crawls through this vent, and his head and shoulders and arms look so ridiculous. I guess they had to bend or cram the character model or something, but I literally laughed out loud. You can grab and swing and toss the enemies too. Again. Manikins. It was like tossing bowling pins or something, except when they hit other enemies, they often just shot right through them.
Then there's the camera. I guess in a game where you can climb almost every surface and shoot from wall to wall to ceiling to pillar to trash can and freeze time in midair (wut) to change direction and shoot another way, your camera's just going to go wonky every now and then. But it seemed like it was doing it much more often than other open games like that. Its like the camera just didn't know where to go. I was regularly inside Spiderman's body when zipping about from wall to wall. It was very disorienting.
And finally, this is probably more of just a general gripe with a gamestyle, but I cannot stand games where the game performs amazing aerial acrobatic attacks for you while you mindlessly mash the A button. One of the reasons I loved OoT so much was because of the Jump Attack. I would figure out just where to stand and how close I could get and how far away I could be to attack exactly the way I wanted to. And it was so rewarding to Jump in to slash, dodge to the right or left to miss a vertical attack or backflip to miss a horizontal attack in a crowd of enemies. And nothing was quite as rewarding as cornering and knocking an enemy off of a ledge into the water so it died (lookin at you stalfos). The game wasn't programed to do that. I just figured out how to do it. Its not so much a problem with the game itself, but I just don't like games like this where the game does all the fancy work for you. Where's the sense of accomplishment? You didn't do that crazy "leg grab, swing off the pillar, toss the bad guy in the trash can move", the game did. All you did was mash A like a moron.