It features two gameplay styles: 'Classic', which. Sonic CD Sonic Advance Shadow in Sonic: On Line Friday Night Funkin ': Sonic the Hedgehog FNF Vs Sonic Exe online (Friday Night Funkin) Sonic 3 and OVA Sonic Sonic Advance 3 White Sonic in Sonic Knuckles Sonic 2 - Anniversary Edition Sonic.EXE Sadness Sonic 1: Team Adventure Sonic 3. Not only the steam activity needs to be checked, but there are limited resources on your PC and you will need to take care of the background applications on the PC as well that might be taking up the processing power and your game Sonic Generations will stop working for you. Sonic Generations is a 2011 platform video game developed by Sonic Team and published by Sega for the PlayStation 3, Xbox 360, Nintendo 3DS, and Microsoft Windows.Produced in commemoration of the 20th anniversary of the Sonic the Hedgehog series, the game follows Sonic and his sidekick Tails as they form an alliance with their past selves.