When you say demos speaking about games that are available online, you say free versions of the games that you can download or that you can play online.
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Until now, I have not found games demos that can be downloaded or played online for money.

In this article I am going to talk about a few of the puzzle games that are present online and which refer to the word games. If you use the Google or the Yahoo search engine, and you search for word games online the first site that will appear in the list is wordgames.com. On this site, you will find new games, popular games, word search, typing games, crosswords, sudoku, puzzles and Mahjong. If you are new to this site, you can explore the universe of word games by finding the daily word. Start out with a simple word search. You can set the difficulty of the game to a higher level. I would suggest you to start with the easy level and only after that to go to medium and hard. To play a game on this site, you don't have to be registered, nor to provide your credit or debit card information. I must say this even from the beginning of this article, because I am always asked about the financial information that you have to provide on some sites. If the games are free, why should you provide your financial details? The very careful when you enter sites where you have to provide information like this. The daily word search game is represented by a grid which has 10 columns and 10 rows. If I remember a mathematical operation, 10x10 equals 100. In other words, you have 100 squares on the grid, every square containing a letter. This card game requires you to find 10 words. The level of the game that I have just entered is of course easy. The game has a time limit, but this limit is not set by the site, but by your friends or by yourself. You have to find all the words that are included in the list as quickly as possible. The final score will be posted on Facebook and your friends will laugh of your results if you will not obtain good scores.

You have to pay attention only to the words that are included in that list and try not to find other words. I am saying this because I have found several words that are not included in the list, but which are in the grid. When you think that you have found the word you have to click the first letter of the word, then go towords the correct position of the last letter that is included in the word. Only then you can remove your finger from the touchpad, if you have a laptop, or from the mouse button. The words can be found horizontally and vertically at the same time.

The puzzle games that are available online or that you can download from a CD or a DVD directly into your computer, are usually referring to the fact according to which you have to combine three or four items that are the same or identical in order to obtain some points.
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You can combine 5 items that are similar, but this fact is usually impossible or it is possible only if you benefit of some bonuses or extra advantages, which you can obtain only if you are in an upper level of the game. For example, if you play Bejeweled, you will see that with the coins that you collect, you are capable of upgrading some of your features.

You are able to switch the gems that are present on the grid. Or you can extend your time with some additional 5 seconds, which added to another 60 seconds are pretty valuable. These are only some of the bonuses that you can receive when you reach to certain upper levels. There are more: you can create little bombs that allow you to explode only the green gems or only the red gems, you can obtain bombs as well that allow you to destroy certain parts of the grid with all the items that are included in that area, no matter if the gems are green or red, you can obtain a surprise bonus and so on. But the puzzle games are not necessarily referring to this category of games, related to the matching of three or more identical items on a grid. It can refer to the mystery games that usually include 10 or more items that need to be found by the user in order to move on to the next level or to the next room where he will be requested to find another 10 or more items. I have to mention that I like these games more than I like to combine three or more items that look the same. The mystery games allow you to use your mind, rather than using your skills of how fast you are or how fast you can become if you continue to play that game.

A very interesting game that I have to mention that I've played is Mystery Case Files:13^th Skull. Even the name of the game says it all. You need to reveal the mystery that is the round this case. If you know the Sherlock Holmes detective, you can imagine how this game is. The interface of the game is amazing and also controls. By the way, you can set your own controls if you're not happy with the controls set by the manufacturer of the game. This is done in order to is your access to the game.

The most popular Mac games that are present on the site named download-free-games.com are: Life Quest, Farm Tribe, Kate Arrow: Deserted Wood, Mystery Valley, Love Chronicles: The Spell Collector’s Edition, Mystery Case Files: 13^th Skull, Plants vs Zombies and more.
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If you enter the site I have mentioned you will see not only what are the most popular games that can be played on your MacBook computer, but also you will see what are the top 5 Mac games, selected by their category. I will take a few examples to show you what are the possible games that can be played from this site. Let’s consider the Adventure category. The first game that appears in this category is Dark Tales: Edgar Allan Poe’s The Black Cat, then we have Kate Arrow: Deserted Wood, Awakening: Moonfell Wood, Mystery Case Files: 13^th Skull, Mystery Trackers: The Void.

Now I will take as an example the Arcade and Action category. The first game that appears in this category is a game which is also playable on Windows computers. Its name is Cooking Dash 3: Thrills and Spills. The second game that is present in this category is Airport Mania 2: Wild Trips. Plants vs Zombies is at the third position in this category, followed by Cake Mania 3. These games that you see ended in 2 or 3 are sequels of the original games. If the developer saw that the game has success, then he created another game which is improved and allows the users to use more functions and features in order to feel that the game is a bit changed, even though it is named in the same way. The last game that appears in this category is My Life Story. In the Card and Board category, we have Mahjongg Platinum 4, Governor of Poker 2, World of Goo, The Price is Right, Slingo Quest. The top 5 hidden object games are: Mystery Case Files: 13^th Skull, Awakening: Moonfell Wood, Kate Arrow: Deserted Wood, Dark Tales: Edgar Allan Poe's The Black Cat, Redemption Cemetery: Curse of the Raven. There are some other categories presented on this site, but I will not mention all of the games that can be downloaded or played in the browser on this site.

One of the other categories is Match 3, Puzzle, Strategy and Time Management. At the end of the page where there are presented all the MacBook games, you can see a classification of these games according to their initial. So we begin with a game called "2 Tasty". Then we have "3 Days: Zoo Mystery". "4 Elements" is the third and the last game which is included in this 0-9 category.