Critical Warning: This is where we separate myth from malware. When you search for "The Binding of Isaac Unblocked Games," you will find dozens of sketchy websites (often named something like UnblockedGames666.com or SchoolIsaac.net). Most of these are not official.
Here is the truth:
If you want to play The Binding of Isaac on a restricted network, you have three legitimate and safe options that don’t require visiting shady gaming portals. The Binding Of Isaac Unblocked Games
If you can’t access Steam or the Epic Games Store at school/work, try these legitimate options: Critical Warning: This is where we separate myth
Official versions receive patches. Pirated copies don’t, leaving your computer vulnerable. leaving your computer vulnerable.