- 100 levels/exercises
- HTML mode that covers basic tags like A, IMG, STRONG, and EM
- CSS mode for more advanced markup and styling
- Local co-op*
- Optional "bug" setting to keep you on your toes
- Free Play mode where you can export levels to actual HTML files
* Note: Only Free Play and CSS Mode support local co-op. Player 2 will also need to use a gamepad (preferably an Xbox gamepad).
