The confirmation that Episode II is completely reworking the physics in response to the complaints about Episode I. Also the confirmation that Episode II will have Tails as a playable character in 2-Player mode.
"Lock-On" between Episodes 1 and 2 confirmed. Connecting the Episodes together unlocks a bonus Episode called "Episode Metal", allowing you to play as Metal Sonic in 4 exclusive levels - Specifically, the Episode 1 levels, with updated level designs and physics engine!
The idea of Tails speaking was initially terrifying, until it was revealed that he no longer sounded like a 5-year-old girl, courtesy of Kate Higgins. And as for the new voice of Knuckles... Travis Willingham.
Another Sonic gameis coming. And just in time for his 20th Anniversary to boot. Starts out with Sonic running through the frozen remains of the Green Hill Zone, which is pretty cool until IS THAT RETRO SONIC?!◊ Fans rejoiced even more when they heard that classic Sonic was voiced by the same voice actor who did the voice of GordonFreeman.
There was also CITY ESCAPE, and both Sonics get to play through the stage, board-riding and all. The truck is back. As Modern Sonic, it has friggin' chainsaws and chases you for far longer than it did in Adventure 2, destroying buildings and chasing you sideways across walls! Even Omochao makes a brief cameo! And to put the cherry on top, Sega contacted Tony Harnell, the original singer of "Escape from the City", to do a rearrangement of the song for Generations. Take my rings, Sega.
The reveal that both Past and Present Dr. Eggmans are in control of the Time Eater brought much rejoicing among the fans.
Even more rejoicing ensued when a leaked cutscene showed Classic Tails actually referring to past!Eggman as "Robotnik".
Then the Doctor informed Classic Tails that nobody calls him that anymore; the script seems to be written to give joy to people (Classic or/and Modern fans) who appreciate the games and troll Fan Dumb "fans", for example, that don't know/acknowledge the reasons behind the use of both names... But thank god they made an effort to explain that Dr. Ivo "Eggman" Robotnik is indeed just one guy.
Sonic Lost World has been getting this reaction upon the reveal of its teaser trailer, namely due to the new gameplay style that looks like a crossover between the cancelled Sonic X-treme and Super Mario Galaxy. The new gameplay style also has parkour gameplay elements and brings back the fan-favorite spindash gameplay move.
Many fans were happy to hear that the 3DS handheld version will also be a 2D/3D platformer like its Wii U cousin. Especially notable since it's the first Sonic handheld to have 3D gameplay. Past handheld Sonic games have been strictly 2D or 2.5D.
Elements from the Genesis Sonic games have been brought back, such as the "badnik" animal robots and the tiny animals that they contain as well as the return of the spindash and Sonic's Super Peel-Out animation.
Near the end of Unleashed's development cycle, we had a very odd one - the game got delayed. Most people would think this was a bad thing, but after having rushed games for the past few years, the delay showed a lot of fans something they had been doubting, which was that SEGA cared enough for the game's quality to hold it back for touch-ups.