Digitz! is a free online multiplayer game providing you hours of mind-bending fun. Even being absolutely mathematically challenged, I discovered a simple fun of addition with help of Digitz! The point is to swap letters over the free cells on the playfield so that adjacent letters would make up a required sum. Say, if you are required to get 10, you are to place 3 and 7, 2 and 8, 1 and 9 etc. on the adjacent cells of the playfield. 

Superfishing - a classical fishing arcade presented by Happygames.com. The point is to scroll down your hook and catch the fishes, octopi and other live creatures passing back and forth under your boat. Mind that you have to do that as your time is constantly melting. Each fish or octopus that you catch will add you some more time. But you have to do that very often.

Gain control over the board by attacking your opponent's blobs and converting them into your own. You can spawn a blob into an adjacent space or you can jump into an open space one square away. Select the blob and move it by clicking on a highlighted space. A single step move generates a new blob. 2-step move removes the original one. Finally your blobs capture opponent's ones. They change color when turning to your side.

A classical match-3 game of bejeweled type. In this connection it doesn't come as a surprise, that the point of the game is to place in a raw 3 little animal icons. Matched creatures disappear often causing chain reaction of additional matches. Apart from  making combos and using bombs, game features a number of other peculiarities: for example, you have to use each square on the grid at least once, which adds tension to this cosy and peaceful rural  puzzle.  

A classical Pool game. The point is to pocket all the balls using the crossed ball. Use the left mouse click to indicate where you want the crossed ball to move. Be sure to pocket the balls from 1 to 8 in the correct order. In such a case you can get 100 points for each of them. Every time you pocket the wrong ball, you'll be fined for 50 points and the ball will be returned to the playfield.