I was so addicted to Drop7, and so annoyed at the crappy Android version, I made my own HTML/JS version with appcache, so I could play it in chrome offline: https://github.com/pavellishin/drop7

This is fantastic! Thanks so much for sharing, I learned so much from reading your very elegant and well-commented code.

Just in case anyone is looking at this and wants a direct link to play pavel_lishin's version, here's the raw github version: https://rawgithub.com/pavellishin/drop7/master/drop7.html

Side note: I got hooked on Drop7 during my first semester in college. I was fascinated by the game and wrote a simulator to pick the optimal move: https://github.com/keshavsaharia/Drop7Simulator

Ooh, nice! I thought about writing some sort of AI to play for me, but never got around to it. (Plus, it felt weirdly oroborous-like.)

Awesome work, thanks for posting. I too was annoyed at Android support. It could be one of their more popular games if it was just updated a little.

Same!