diff --git a/README.md b/README.md
index cc40c37..cd803da 100644
--- a/README.md
+++ b/README.md
@@ -28,3 +28,6 @@ Interactive, themeable multiplication drill game with a Hogwarts aesthetic. Solv
 
 ## License
 MIT License. See `LICENSE` for details.
+
+## Credits
+- Game design & playtesting: Alyssa, Jolene, Kathleen, Evelyn