I think the only one out so far is Mario & Sonic at the Winter Olympic Games.
SONIC unleashed was made in 2009
Here are the Sonic games for the Wii: Sonic and the Secret Rings, Mario and Sonic at the Olympic games, Sonic Unleashed, Sonic and the Black Knight, Sonic Riders Zero Gravity, Sonic Colors, Sonic The Hedgehog, Sonic & SEGA All-Stars Racing, Sonic made an appearance in Super Smash Bros. Brawl, but that's not an actual Sonic game.
maybe sonic unleashed started out as sa3 but they made unleashed instead, but there is still hope
The next Sonic game codenamed 'Project Needlemouse' is coming in 2010 and will be a 2D-classic style Sonic. SEGA wouldn't have made the Hedgehog Engine just for one game, so there will definitely be more 3D Sonic games. It is unknown whether they will make a Sonic Unleashed 2 but it isn't likely given that heaps of people hate the Werehog.
Sonic Unleashed really pushes the graphics limit on the PS2. The game was made in 2008 and the system was made in 2000, an eight years difference is huge when it comes to graphics.
Nether he is in super smash bros Vector the Crocodile (if this is the Vector you are referring to in the question) is part of the Sonic The Hedgehog franchise and has made an appearance in Sonic games such as Sonic Heroes and all three games of the Mario and Sonic at the Olympic Games series.
SA3 is not real or made or anything. It's a rumor.
They are making Sonic Colours for Wii and DS as well as Sonic the Hedgehog 4.
Yes, Espio is from sonic he was made for knuckles' Chaotix. he also appears in various other games related to sonic.
Sonic was made in 1992 in his first game sonic the hedgehog.
x box 360 of course or the ps3 the graphics are awesome
Nope, the comics were made in North America by Archie, while the main-canon games were made in Japan by Sonic Team.