My List of 2048 variants

I have been hooked on 2048, its a great puzzler that's a mix between strategy and completely blind luck.  Here is a list of the original and derivatives that I come across (mostly from Hacker News.)

Single Player:

• The Original
• Evil 2048
• 2048 4D
• 16384 Hex
• 2048 Tetris
• 2048 for Physicists
• 6x6 Grid
• 8x8 Grid
• Circle of Fifths - Musical 2048

Multi-player:

• 1 v 1
• 2x2048
• HN Plays 2048

AI

• 2048 AI