What is the best PC game?

if you would like to try some thing different check out the myst series or schizm,really great games.some other games that fit part of what your looking for,you could check out,the elder scrolls morrowind game of the year,oblivion game of the year,fallout 3 game of the year,fallout new vegas,divine divinity the dragon knight saga,dragon age origins/awakenings,all great games with many hours of game play to each of them.hope this helps.have fun gaming.