What is your favorite game of all time??

[littlered615]

I want this to be a discussion of ANY game that is your favorite. IT DOES NOT NEED TO BE SEGA RELATED!!!!

[Ioshyriku]

Phantasy star: a game about a beautiful heroine that lost her brother after he tried to save the people of the Algol Solar System from an evil dictator, so she joins forces with a cat a swordsman that uses guns and an esper to stop the bad guy and save the solar system 
I also like the following games(especially the fourth)
I'm not sure why is this my favorite, it might be because of the great characters

also no offence but this isn't in the right section