diff --git a/README.cat b/README.cat
index 9c4bc7c3a..0b63c98ce 100644
--- a/README.cat
+++ b/README.cat
@@ -1,5 +1,10 @@
 STK Cat Mod {Now with 100% more git repos!}
 
+WARNING:
+I have changed enough by now that the game is getting a little unstable (random
+crashes, phasing through walls if going too fast), please use with caution (and
+if you find a bug, try and fix it if you can before reporting it).
+
 What I've changed in the mod:
 
 - You can have different default powerups (so, not POWERUP_NOTHING anymore),