diff --git a/README.md b/README.md
index eb0f2c1..a225b1c 100644
--- a/README.md
+++ b/README.md
@@ -118,6 +118,7 @@ Games List
 | `bfh`      | Battlefield Hardline (2015)
 | `bfv`      | Battlefield Vietnam (2004)
 | `bfbc2`    | Battlefield: Bad Company 2 (2010)
+| `blackmesa` | Black Mesa (2020) | [Valve Protocol](#valve)
 | `breach`   | Breach (2011) | [Valve Protocol](#valve)
 | `breed`    | Breed (2004)
 | `brink`    | Brink (2011) | [Valve Protocol](#valve)
diff --git a/games.txt b/games.txt
index 7828c6f..3bf0589 100644
--- a/games.txt
+++ b/games.txt
@@ -40,6 +40,7 @@ bf3|Battlefield 3 (2011)|battlefield|port=25200,port_query_offset=22000
 bf4|Battlefield 4 (2013)|battlefield|port=25200,port_query_offset=22000
 bfh|Battlefield Hardline (2015)|battlefield|port=25200,port_query_offset=22000
 
+blackmesa|Black Mesa (2020)|valve|port=27015
 breach|Breach (2011)|valve|port=27016
 breed|Breed (2004)|gamespy2|port=7649
 brink|Brink (2011)|valve|port_query_offset=1