So please let me know what is your favourite Sonic game, why and what is your favourite level!  My favourite Sonic game is Sonic Adventure 2 Battle because I like the older Sonic games like Sonic Adventure 2 Battle and I also love the story line's of the old Sonic games, as for my favourite level, City Escape I really like the idea of Sonic riding a snowboard! So please let me know what you think!!!

I mainly like the retro games and colours and generations those are the only sonic games that I didn't have any big complaints about. If I had to pick one it would probably arguably be Sonic The Hedgehog 3&Knuckles. Yes technically that's 2 games but they can be combined into 1 so that's not cheating It's really the only Sonic game I'd consider near perfect even including all the retro games.

Definitely Sonic 06

My favorite Sonic game would have to be Sonic Adventure 2. To me, the older Sonic games are the best. Very few of the new games capture the same sense of adventure I feel when I am playing one of the older games. As for the levels I like in Sonic Adventures 2, I'd have to say Green Hill and Final Rush are among some of my favorites. The original Sonic The Hedgehog is also one of my favorites....I can't believe it's already been 24 years since its release. 

That's a hard question...I've got a few, but if you put it that way I would say sonic heroes. I still remember the time when my brother play this game before me. And at the time I watched him. There was so many bright colours and amazing music plus the game play as well. So I started playing this game a lot, and I loved it to the point I just kept on replaying the game without any boredom. ^^

Sonic the hedgehog 2 comes second with sonic 3d blast Sega Saturn in third place.

My favorite Sonic game is Sonic the Hedgehog. My favorite level is Spring Yard Zone because of the way you can gain great height from the springs and gain momentum to go faster 

My favourite Sonic game is Sonic the Hedgehog 2. It is my favourite, because it is the first Sonic game I ever played/owned. I had it when I very little and I remember playing it with my father who passed away when I was still little. So Sonic actually gives me a way to cherish my father and my childhood, that's why he is my favorite video game character/franchise. I find meaning in the stories of Sonic games, too. My favourite level is Sky Chase Zone, because after the first 8 zones, you might be tired out, or frustrated with game. But then comes along Sky Chase, with it's low difficulty and calming music, as if it's saying, "Come on, you're almost at the end. Just relax a little, and enjoy the calm before the storm (the storm being the rest (and the most difficult part) of the game). You can do this!" - Parenthesis Inception.

That's tricky. I'm a huge fan of Sonic 2, mainly just for how fast it felt. While Sonic 1 was a great game, you must admit, during a lot of it, you weren't going very fast, especially in stages such as Marble Zone or Labyrinth Zone. The game is still fantastic though. I would have to say Sonic 2 though, it introduced the spindash, and the game just feels a whole lot faster than the first game. Sonic 2 is one of the few games I would give a perfect 10.

As for favorite level, Seaside Hill from Sonic Heroes.

I'm torn between the two Sonic Adventure games and Sonic 3 & Knuckles. The SA games may be nostalgia, but I go back to it every now and then to care for my little baby chaowies ~
They're named Ninja and Tango, and I actually began recreating them on the PC port. I'll give you some pictures, actually.





This was actually my Sonic chao who is currently very blue with over 150 run!  Yes, I use mods if it wasn't obvious from the textures.





Tango is the hero chao and Ninja is the dark chao! They're both in their pre-evo stages in this pic but Ninja just turned two a while back.





slightly unrelated, but I let 4chan name my chao. In the end his name was Snake, you know like Solid Snake.





a slightly more modern Ninja and a still unevolved Tango, as he'd spent most of his time being taught at school.

Anyway I think I'm done spamming this thread with my adorable chao, I'll stop now.

This is gonna be a really unpopular opinion, but I really liked sonic chronicles: The dark brotherhood. I just loved the idea of a sonic rpg and while it wasn't the best it could've been, it shows how much more potential it had.

None. Well I like Sonic '06. Great piece of art. A must play game. 

I have not played Sonic beyond 16 bits so my choice is limited. Nevertheless, I still vote for Sonic 3 and Knuckles. Great music, impressive graphics and, most important of all, relatively easy gameplay. I still remember "Lucky Lungarian"'s plan of the special stages, which were a real life-saver to gather all those blue spheres, especially for the Super Emeralds. I had to look thoroughly at the plan for the dark blue emerald as there really was only one way to collect the spheres and not bounce back on a red sphere.

My favorite Sonic game would have to be Sonic Adventure 2.

I played this game the most out of all the sonic games I have played. I spent most of my time trying to get every single Chaos Chao. It was time consuming but I had fun raising them even though there were multiple times that I almost gave up. Besides taking care of the Chao's I enjoyed playing some of the stages like City Escape, Green Forest, Radical Highway and Metal Harbor. I wasn't too fond of the treasure hunting stages but I was able to get through them and complete the game. The music is great, I liked listening to the music that played during the Biolizard boss battle while you are Shadow. Also, the music from that famous scene where Sonic and Shadow face off in Green Forest before it explodes. 

Sonic Generations is a close second but I still have more fun playing Sonic Adventure 2, for now.

I love Sonic 06! (Gets dragged off by raving fans saying very negative comments) I actually like in a tie Sonic Generations and Sonic 3 and Knuckles. Sonic Generations gets off on the nostalgia factor as well as with great game play. Sonic 3 and Knuckles offers multiple characters with a few distinct abilities to get you through the game, giving it replay value, and it has so many zones to play through.