As part of the effort to support the community Valve has just announced that 5 free HL2 (Source engine) based games aka mods will hit Steam next week. The first five MODs to ship on steam will be Age of Chivalry, D.I.P.R.I.P., Insurgency, Synergy, and Zombie Panic. As always, owners of any Source game will be able to download and play all of these MODs for free.
Once installed, these MODs will appear in your “My Games” list and will receive automatic updates just like other games on Steam. Also, these MODs now take advantage of Steamworks, which provides stat tracking and tighter integration with the Steam community.
Valve is excited to see MOD developers get wider recognition for the hard work they have done, and hope to support more MOD teams in the future. Watch for the official release next week!