diff --git a/README.md b/README.md
index ea93bde..bc08539 100755
--- a/README.md
+++ b/README.md
@@ -18,3 +18,9 @@ dotnet run
 
 - [SRS](./TetrominoSRS.md)
 - [FS](./TetrominoFS.md)
+
+## Not fulfilled requirements
+
+- [ ] 7.7 Background Music - Difficult to implement both for Windows and Linux
+- [ ] 7.8 Tetromino Colors - Difficult to implement with current implementation
+- [ ] 7.11 Next Tetromino Preview - Not enough time