Should I buy Counter-strike source or Command N conquer 3 tiberi

buy half life 2 and get one of the best games ever made, and get counter strike source with it for free

while buying c&c3 may seem like a very appealing choice, allow me to offer an interesting alternative to buying c&c3 you may have overlooked:

do not buy c&c3, it sucks balls

Unlike what these, people, have said. CnC3 is amazing, and if you already own HL2 and not CSS. Go for CNC 3 instead of CSSBlackstaff

HL2 comes with CS:S, so it's not possible. Get HL2, you get an amazing game, plus CS:S and then there are all the mods..