Skyrim. A lot of Skyrim, no better time waster than when you're sick 'n feelin' mentally derpy (... moreso than usual, mind ya). Smashed out the Thieves Guild, College of Winterhold, 'n Companions quest lines with plenty'a haste, and am currently level 49. Time t' go ahead with the main questline.
Ive played Sonic xtreme.
The Sonic game that never came out, all I can say is for the time it would be impressive, the 3D Sonic sprite still looks decent