Backgammon

Not many people have heard of the game called "backgammon".  It is known as the oldest board game for 2 players (known to exist around 5000 years ago according to Wikipedia).  This is what a backgammon board looks like:

The aim of the game is to remove all the pieces from the board before your opponent does.  During the game, your pieces may be blocked or captured by your opponent.  It is a game that requires a mixture of strategy and luck, depending on your roll of dice.

Backgammon can be played physically if you buy a backgammon board, or it can be downloaded online for free.  It is fun to play but you will realize that luck helps to win at least some games.  To win more often, your strategy and experience comes into play.

Have a look at Wikipedia for more details about this board game:
http://en.wikipedia.org/wiki/Backgammon

10 Famous Logos That Have a Hidden Meaning

Some are probably more obvious than others.  An interesting read:

http://wonderfulengineering.com/10-famous-logos-that-have-a-hidden-meaning/

Two Fingers One Brain

This is an interesting yet challenging game which involves completing 2 puzzles at the same time with time limits (shown on top of the screen). The puzzles appear on the left and right, similar to this:

While many are in the form of logic and arithmetic problems, some requires quick reaction or dodge from bombs etc:

As the game progresses, there will be stricter time limits to complete the puzzles and once you get 5 incorrect attempts for different puzzles (or if you run out of time), the game finishes, similar to this screen below:

If you are into problem solving or a fan of puzzles, I highly recommend this game to you.  This game is available for both iPhone and Android platforms.  Who knows?  You may introduce this to your friends too.  Search for "Two Fingers One Brain".  Enjoy!