This is awesome, but tutorial seems slow and boring.
Friendly reminder: launch iOS/Android version before someone else does
Friendly reminder: launch iOS/Android version before someone else does
EDIT: The history is a little more interesting than that. The janko.at page on Tohu wa Vohu[2] names many pre-existing variants: Eins und Zwei, Binary Puzzles[3], Binoxxo, and others. Binary Puzzles are notable for being paper-and-pencil puzzles, but it's not clear whether these were first paper-and-pencil puzzles or computer puzzles.
[0] http://www.chiark.greenend.org.uk/~sgtatham/puzzles/doc/unru...
[1] https://chris.boyle.name/projects/android-puzzles/
[2] http://www.janko.at/Raetsel/Tohu-Wa-Vohu/index.htm
[3] http://www.puzzle-magazine.com/binary-puzzle-magazine.php