diff --git a/cmd/screp/screp.go b/cmd/screp/screp.go
index 2341a80..bd38b9d 100644
--- a/cmd/screp/screp.go
+++ b/cmd/screp/screp.go
@@ -24,7 +24,7 @@ import (
 
 const (
 	appName    = "screp"
-	appVersion = "v1.12.3"
+	appVersion = "v1.12.4"
 	appAuthor  = "Andras Belicza"
 	appHome    = "https://github.com/icza/screp"
 )
diff --git a/rep/replay.go b/rep/replay.go
index f0ad213..9bc5bee 100644
--- a/rep/replay.go
+++ b/rep/replay.go
@@ -158,8 +158,10 @@ func (r *Replay) Compute() {
 			mapName = strings.ToLower(stringsx.Clean(mapName))
 			// "[ai]" maps are special, we can do better than in general:
 			switch {
-			case mapName == "  hunters kespa soulclan ai" || mapName == ":da hunters ai" ||
-				mapName == "(xb2) big game hunters" || strings.HasPrefix(mapName, "王牌猎人") ||
+			case mapName == "  hunters kespa soulclan ai" || mapName == ":da hunters ai" || mapName == "(xb2) big game hunters" ||
+				mapName == "big game hunters" || // Multiple BGH versions have random team assignment, always try if UMS
+				strings.HasPrefix(mapName, "王牌猎人") || strings.HasPrefix(mapName, "j_big game hunters") ||
+				strings.Contains(mapName, "随机分组") || // "random grouping"
 				strings.Contains(mapName, "[ai]") || strings.Contains(mapName, "ai hunters") || strings.Contains(mapName, "bgh random teams"):
 				r.detectObservers(pidBuilds, obsProfileUMSAI)
 				r.computeUMSTeamsAI()
diff --git a/repparser/repparser.go b/repparser/repparser.go
index dcdae07..4d9bdb6 100644
--- a/repparser/repparser.go
+++ b/repparser/repparser.go
@@ -60,7 +60,7 @@ import (
 
 const (
 	// Version is a Semver2 compatible version of the parser.
-	Version = "v1.12.3"
+	Version = "v1.12.4"
 )
 
 var (