xnevs

For me, even with very few windows open (but more than 2) a tiling window manager is superior because of the keyboard-driven directional navigation (Super+[hjkl]) instead of the unidirectional Cmd+Tab.

You're overthinking that.

I think this game is a bit different than http://gabrielecirulli.github.io/2048/ Take a look at this situation:

   ___________________
  |___2|____|____|____|
  |___2|____|____|____|
  |___2|____|____|____|
  |____|____|____|____|

in the original the result of going up would be

   ___________________
  |___4|____|____|____|
  |___2|____|____|____|
  |____|____|____|____|
  |____|____|____|____|

but in this game it's

   ___________________
  |___2|____|____|____|
  |___4|____|____|____|
  |____|____|____|____|
  |____|____|____|____|