Just like Mario was for Nintendo is Sonic for Sega, except that Sonic's special weapon was his speed and Sonic Generations acknowledges that. Sonic Generations supports both 2D and 3D game play with a ton of new levels and different games with Sonic. The famous little hedgehog which got its fame from Sega Master System and Sega Genesis and beyond is celebrating his 20th anniversary and with that, Sega has released a new game on the Steam platform giving users the ability to relive some of the coolest game modes Sonic has appeared in over the years.