Wait he just said Steam Down.....
Steam Down is a program made by a guy named Hellboss that works to download all half life 2 and 1 games for free. Don't expect to play ESF online on Steam Down unless there is "Fixed" servers for it or if you have a legit HL1 account that let's you play on VAC2 servers. Just pick up hl1 or 2 from the store god...