Typeshift

Typeshift is deceptively complicated, but your goal couldn’t be more straightforward: Make it so all of the letter tiles turn from brown to green.
To do so, you need to shift adjacent columns until you spell out specific words in the middle row. If that sounds easy—especially if you consider that early levels start out with just five columns—know that puzzles quickly become more confounding.
Like the best puzzle games, you may kick yourself for missing obvious solutions. But as any puzzle fan will tell you, the rush that comes with cracking a tough code is unmatched.
A good match for: Spelling bee champs, crossword enthusiasts, and editorial professionals.
Not a good match for: Scrabble sore losers.
Watch it in action.