There are exactly 35 sonic games that have been released. Yes, that is true, I did some research, don't say you have more, or that my facts are off. Ports are counted as a seperate game, but if you just own the port, don't count the games it includes. Another thing you should take into account is that the dreamcast adventure games are counted seperatly from the gamecube adventure games. Also, don't count multiple copies of the same game. Currently, I have 23 games. I have all the games except sonic cd, chaotix, heroes, and the advance games (with the exception of Sonic advance 2)