Update README.md

README.md

@@ -6,3 +6,14 @@ The main GitHub repository for JellyBean's Mid-Sim.
 
 ## Documentation For Chartmaking
   [CHARTS.md](./CHARTS.md)
+
+## Warnings 
+  When downloading/playing an unofficially distributed mod of this game, be careful and look at [code/charts.js](./code/charts.js) for any bad code before you continue! Any `eval()`, popup, or other malicious code references should be a huge red flag!
+  
+  Some things to look for:
+  `eval()`
+  `window.close()`
+  `fetch()`
+  `alert()`
+  `document.body.style.backgroundColor` (could cause a seizure for those who are photosensitive)
+  `window.open()`