94 Seconds

Quick - fire quiz games that tickle your brain. Ideal for those moments of downtime - waiting in line, say, or for the phone to ring - 94 Seconds is a quick0fire quiz game that's good for tickling your gray mater without running the risk of getting bogged down in a game. Players use their minute and a half (and change) to fill in the letter and a category.

You're rewarded based on how original you are - for example, guessing " chameleon" instead of "cat" when asked for animals that start with "C" will get you a far better score. You can use a couple of quick cheats to get ahead in a round, but the best feeling is beating the clock with your own original answers.
For iOS and Android devices.

WP-Bloomberg

Angry Birds Friends

Finally, competition

The Angry Birds franchise has taken us plenty of places. We've flung birds in Rio and in a galaxy far, far away, but now game-maker Rovio is attacking an entirely new frontier: the competitive arena. "Angry Birds Friends" taps you into your network of Facebook friends to offer a new dimension to its familier game. Users can play weekly tournaments with their friends with three levels per week. At the end of the tournament, the game lets you know how each of the four players have fared in their levels and ranks them. The addition of a ssocial, competitive element is fun - users should know the game must be granted Facebook access to work - but it's really easy to blitz through your levels fast and have the app sit dormant for the rest of the week. If you like trying to best your friends, then feel free to pick up this title.
But if you want a game with lots of playing time, give this one a miss. Free, for iOS and Android devices.