WordMem

Word Mem is a word and memory game where you must create as many words as possible within the time limit. Each round this time limit is reduced.

Unlike other grid based word games you do not get to see the letters on the tiles all the time, instead you are shown them at the start of a round, and need to remember where they are. (or you can spin them all back round to look again, but then the clock is still ticking)