diff --git a/cmd/strom/print_nbt/main.go b/cmd/strom/print_nbt/main.go
index da9df0c..2e4a430 100644
--- a/cmd/strom/print_nbt/main.go
+++ b/cmd/strom/print_nbt/main.go
@@ -25,7 +25,7 @@ func Run(args []string) (err error) {
 		return
 	}
 	defer f.Close()
-	n, err := nbt.ReadFile(f)
+	n, err := nbt.ReadUnstructuredFile(f)
 	if err != nil {
 		return
 	}
diff --git a/data/registry.go b/data/registry.go
index 66b935f..5348690 100644
--- a/data/registry.go
+++ b/data/registry.go
@@ -15,6 +15,6 @@ func LoadRegistry(name string) (n *nbt.Tag, err error) {
 		return
 	}
 	defer r.Close()
-	n, err = nbt.ReadFile(r)
+	n, err = nbt.ReadUnstructuredFile(r)
 	return
 }
diff --git a/level/litematic/main.go b/level/litematic/main.go
index 9daae77..4a6b2f9 100644
--- a/level/litematic/main.go
+++ b/level/litematic/main.go
@@ -97,7 +97,7 @@ func LoadFromPath(path string) (s *Structure, err error) {
 }
 
 func LoadFromFile(r io.Reader) (s *Structure, err error) {
-	n, err := nbt.ReadFile(r)
+	n, err := nbt.ReadUnstructuredFile(r)
 	if err != nil {
 		return
 	}
diff --git a/level/structure/structure.go b/level/structure/structure.go
index 645aafe..323b431 100644
--- a/level/structure/structure.go
+++ b/level/structure/structure.go
@@ -6,7 +6,7 @@ import (
 )
 
 func Load(fileName string) (s *Structure, err error) {
-	n, err := nbt.ReadFilePath(fileName)
+	n, err := nbt.ReadUnstructuredFilePath(fileName)
 	if err != nil {
 		return
 	}
diff --git a/nbt/file.go b/nbt/file.go
index 52e4f76..ee49d38 100644
--- a/nbt/file.go
+++ b/nbt/file.go
@@ -4,16 +4,28 @@ import (
 	"compress/gzip"
 	"io"
 	"os"
+
+	"github.com/admin-else/strom/mapstructure"
 )
 
-func WriteFile(file io.Writer, n Tag) (err error) {
+var Format = mapstructure.NewFormat("nbt", mapstructure.WithRequireAll())
+
+func ReadFile(file io.Reader, data any) (err error) {
+	n, err := ReadUnstructuredFile(file)
+	if err != nil {
+		return
+	}
+	return Format.Decode(n.Value, data)
+}
+
+func WriteUnstructuredFile(file io.Writer, n Tag) (err error) {
 	gzw := gzip.NewWriter(file)
 	defer gzw.Close()
 	err = n.Encode(gzw)
 	return
 }
 
-func ReadFile(file io.Reader) (n *Tag, err error) {
+func ReadUnstructuredFile(file io.Reader) (n *Tag, err error) {
 	r, err := gzip.NewReader(file)
 	if err != nil {
 		return
@@ -24,11 +36,11 @@ func ReadFile(file io.Reader) (n *Tag, err error) {
 	return
 }
 
-func ReadFilePath(path string) (n *Tag, err error) {
+func ReadUnstructuredFilePath(path string) (n *Tag, err error) {
 	f, err := os.Open(path)
 	if err != nil {
 		return
 	}
 	defer f.Close()
-	return ReadFile(f)
+	return ReadUnstructuredFile(f)
 }
diff --git a/nbt/snbt.go b/nbt/snbt.go
index ca335f5..f586edc 100644
--- a/nbt/snbt.go
+++ b/nbt/snbt.go
@@ -37,7 +37,7 @@ func PrintSNBTAny(t any, w io.Writer) (err error) {
 	case map[string]any:
 		_, err = fmt.Fprintf(w, "{")
 		for k, v := range t {
-			_, err = fmt.Fprintf(w, "%q:,", k)
+			_, err = fmt.Fprintf(w, "%q:", k)
 			err = PrintSNBTAny(v, w)
 			if err != nil {
 				return
diff --git a/nbt/snbt_test.go b/nbt/snbt_test.go
index 7365930..a81ef29 100644
--- a/nbt/snbt_test.go
+++ b/nbt/snbt_test.go
@@ -10,7 +10,7 @@ import (
 var topSNBT []byte
 
 func TestPrintSNBTAny(t *testing.T) {
-	n, err := ReadFile(bytes.NewReader(topSNBT))
+	n, err := ReadUnstructuredFile(bytes.NewReader(topSNBT))
 	if err != nil {
 		panic(err)
 	}
diff --git a/tools/registry_data_hunter/main.go b/tools/registry_data_hunter/main.go
index 94c5500..5761a49 100644
--- a/tools/registry_data_hunter/main.go
+++ b/tools/registry_data_hunter/main.go
@@ -143,7 +143,7 @@ func handleClient(c *proto.Conn) (err error) {
 		return
 	}
 	defer f.Close()
-	err = nbt.WriteFile(f, p.Data)
+	err = nbt.WriteUnstructuredFile(f, p.Data)
 	slog.Info("saved", "file", SaveAs)
 	return
 }