Black Friday is the day following Thanksgiving Day in the United States (the fourth Thursday of November) and… oh well, check Wikipedia for this kind of information.
What you will really like is to celebrate the holiday season Phaser developers are running a massive 50% off sale across all products on their site.
The offer will only run from November 26th through to the end of Monday 30th November.
You can check my Interphase review and see how much I recommend it, and with the 50% off you shouldn’t miss it.
You can also browse the entire collection of Phaser goods, you will find everything you need to improve your skills.