diff --git a/README.md b/README.md
index 3070458..a28f412 100644
--- a/README.md
+++ b/README.md
@@ -98,8 +98,9 @@ WORLD_NAME="Dedicated"
 # start. Anything saved here is readable by anyone with access to the
 # StackScript, so change it.
 SERVER_PASS="changeme123"
-# true lists the server in the in-game community browser.
+# true plus crossplay willl list the server in the in-game community browser.
 SERVER_PUBLIC="true"
+SERVER_CROSSPLAY="true"
 
 # ---------------------------------------------------------------------------
 # Volume and container settings.
@@ -186,6 +187,7 @@ docker run -d \
   -e WORLD_NAME="$WORLD_NAME" \
   -e SERVER_PASS="$SERVER_PASS" \
   -e SERVER_PUBLIC="$SERVER_PUBLIC" \
+  -e SERVER_CROSSPLAY="$SERVER_CROSSPLAY" \
   -e SERVER_ARGS="-modifier resources more" \
   "$IMAGE"