Modifications for Half-Life developed from 1999 to 2004 and 2020 to present by Doug "Surreal" Arcuri and contributors.
See this recent post that provides context of this continuing work.
- Cold-Ice
- Cold-Ice Resurrection
- Half-Life Pro
- Half-Life Advanced
- Pong
Note: my email addresses of darcuri@optonline.net, surreal@optonline.net, and icq address are no longer active.