they dont have the same storylines lol. they are in the same game universe and there are connections between the two games. strong connections but the stories are completly different fist of all. you play as two different characters in the games, and portal is almost a different genre of game anyways. i dont know why you are debating them anyways you should just get the orange box. jeepers. ad any true half life fan would get them both lol thats why the orange box was made lol. and they both are by far some of the best games out there.