The game might be old but its for sure a 10/10. i finished it 1 time and currently downloading it as im writing this review to play it again. the expansion packs are also good since they give you a perspective of the event from all sides (except the aliens of course). I bought all the half life games (except Alyx) when it was on sale for a pretty cheap price and i dont regret it. if you arent sure if you wanna play it just wait until a sale or something,nonetheless theres a reason people call the half life series the as the best. The half life series has a 10/10 story and for me personally is totally worth buying.