7/10 (good for what it is, but incomplete and legally questionable). Rating as a legitimate Isaac experience: 2/10 (missing 90% of content and all modern improvements).
Several solutions and workarounds have emerged to allow players to continue playing The Binding of Isaac and similar Flash games: Binding Of Isaac Unblocked No Flash
Help. How to play The Binding of Isaac Afterbirth + for Beginners? 7/10 (good for what it is, but incomplete
The Basement Unbound: The "Binding of Isaac Unblocked No Flash" Phenomenon The quest for " The Binding of Isaac Unblocked No Flash How to play The Binding of Isaac Afterbirth + for Beginners
The transition to "No Flash" is critical because modern browsers (Chrome, Edge, Safari) have completely removed Flash support for security reasons.
: Sites like Classroom 6x and Unblocked Games World host versions (often the Wrath of the Lamb expansion) that are typically accessible on restricted networks.