Blokus is a quality, turn-based abstract strategy game in which you are in charge of 21 Tetris-like pieces ranging from one to five squares. Your goal is to place as many of them on the board as possible, following only two placement rules: 1) Your first piece must start in your corner; and 2) All subsequent pieces must be placed diagonally (and only diagonally) adjacent to one of your already-played pieces.

The Four Color Problem is a simple turn-based game in which the goal is to color in as much space on a map as you can, while a computer opponent tries to do the same. The catch is that no two adjacent areas can be filled with the same color. Can you dominate the majority of the map with your color?

Castlewars is a Flash turn-based card battle against either a computer or live opponent where you try to build your castle up to 100 or blast your opponent's to rubble. The game is quick and easy to learn, and can be played against a friend anywhere in the world.

The gameplay mechanic of lobbing bombs at your enemies is nothing new, and Artillery Live! returns the genre to its simple roots. You have a tank on a mountainous battlefield, and using a combination of angle and power must lob shells at your opponent. Unlike Worms but exactly like ZWoK, everyone (up to four players) sets up their shot simultaneously and secretly, and the tanks all fire at the exact same time.

Chick Chick Boom is a combat-style game that pits two teams of chicks against each other in a small divided field. Draw your attack and defense moves on an egg at the bottom of the screen and try to best your opponent. Chick Chick Boom also holds the priviledge of being one of two Flash games to be sponsored by Nintendo.

Dotville is a city-building Flash game along the lines of Civilization, but greatly simplified. You play the leader of a tribe of Dots (yeah, Dots) and must rise to the rank of Emperor in fifty turns, then defeat the evil empire of Squares. It's a simple game, and yet somehow very complex; a bit flawed, and yet fun despite it's quirks.

Quadradius is an online, multiplayer, turn-based Flash game that takes the skeleton of the board game checkers, and pumps it up with a massive list of power-ups and new strategies that turns the game into an addictive and very compelling new concept. In fact, calling it checkers is an oversimplification that does not do it any justice.

Developed by Red Redemption and funded by the BBC, the Flash-based Climate Challenge is a thoroughly researched, compelling resource-management sim. As the "President of the European Nations" you must radically reduce your people's carbon emissions over the course of a century, while remaining popular enough to stay in office.

Doctor Who Cyber Assault (or Cyberman) is a Risk!-like game from the BBC that incorporates several minigame-like elements into the main game. Move your units around the board to conquer new territory, then try and outwit your opponent with rock-paper-scissors-type fights. And when you take a territory with an enemy base, get ready for some gun-firing action.

Great news for those who enjoyed GameDesign's Dice Wars game and thought that it would be even better if it were multiplayer. After building a successful and compelling online multiplayer Texas Hold'em game, Ryan Dewsbury has been hard at work to bring multiplayer action to this beloved dice-based strategy game. And I am very pleased to announce that kdice has just launched!!

Deadly Rooms of Death is a turn-based puzzle game; one turn being the amount of time it takes Beethro, the central character, to move one square or to swing his sword by 45 degrees. DROD is very much a puzzle game, but unlike any other you may have played before. It is actually the sequel to the critically acclaimed DROD: King Dugan's Dungeon, and both were created by Caravel Games.

It isn't often that I come across an addictive browser-based Flash game with which you can play against a friend over the Web. I was pleasantly surprised to find the latest game from Gamesheep is just that kind of game. Crystal Clear is a simple casual game with gameplay similar to the classic game of Lines, and yet with some subtle differences that turn the classic into a compelling two-player battle.

With almost 10 years in the making, Sanctum from Nioga is a very unique game. The best way to describe it would be to say it's like combining chess with Magic the Gathering in a miniature game board setting. It could be one of those classic board games we played as a child, except this game is all digital and played only online.

Kudos is a turn-based life-simulation downloadable game recently released by Cliff Harris, otherwise known as Positech Studios, in the UK. It's a game in which how you spend each day, over time, defines who your character becomes: Does she prefer to stay at home and watch TV all day, go to evening classes to improve job prospects, or hang out with buddies down at the local boozer? Find out with Kudos.

Dice Wars is a unique new turn-based strategy game from Japan. Using nothing but dice and a randomly generated territory map made of hexagons, the game is similar in gameplay to that of the board game, Risk, though much simpler and quicker to play. The objective is to conquer all territories and eliminate all your opponents by attacking them with dice.

ZWoK! is a charming and addictive, multiplayer, turn-based strategy Flash game in which players engage in battles using projectile firing weapons. It's a fight to the finish where the team with the last Zwok standing wins. The game is essentially a simple version of multiplayer Worms, and yet its simplicity is one of the games most redeeming qualities. It easily surpasses most Flash multiplayer turn-based strategy games I have played.

RoboRunner is a DHTML, turn-based strategy, online board game in which you play as a Fixer class bot trying to repair and inspect Inspection Points (IPs) on the hull of a ship. Games can be played single player or multiplayer, and with up to seven other bots. Registration required.

American History Lux is a downloadable war strategy game that takes a remarkably boring subject and turns it into a simple but epic game. It's a whittled-down version of Sillysoft's more Lux Delux title, making it perfect for casual world-conquerors. The game plays a lot like Risk with a few extras and is available for Windows, MacOS X and Linux.

Oasis is an excellent turn-based strategy game drawing inspiration from the likes of Civilization and Age of Empires. Instead of playing one campaign for weeks on end, Oasis condenses all of the same strategy goodness into short, three-minute levels. The steep learning curve has been removed to allow anyone to get hooked on a strong dose of casual gaming fun.

The latest in a string of movie-licensed, multiplayer, turn-based strategy Flash games from BigSpaceship is here, and it's very pretty. In fact, the company's co-founder and CEO, Michael Lebowitz, claims it could well be the first major Flash game release to use the impressive new features of Flash 8. But do the impressive new features make this game fun to play?

So you like turn-based strategy games, do you? Were you among the first to play Tactics Arena Online months ago, and still you can't get enough? Did you run through Spybot with nary an invalid checksum, only to crave more ever since? The wait is over.

From Digital Seed Entertainment comes Tactics Arena Online (TAO), a turn based strategy game the likes of Final Fantasy. By commanding an army of characters on a battlefield, your goal is to decimate your opponents team in a battle of weapons and abilities.

Urban Dead is a fantastic and superbly original MMOG that was created by Kevan Davis. To put it simply: it is a text-based zombie survival game that runs in any browser. Even if this sort of game isn't usually your thing, I'd thoroughly encourage you to give it a go, as it's an extremely original and absorbing experience.

A remarkably rich and highly detailed Shockwave game created for Lego by the folks at gameLab. This turn-based strategy game is a triple-A quality production set in a stunning high-tech universe. The developers have expertly combined story elements with engaging gameplay to create an extraordinary, satisfying and immersing experience.

Here is a unique opportunity to get started with a brand new game just entering an open beta stage. The name of the game is llor.nu, which is also its Web address, except I'm not sure if that should be pronounced "LORE-new" or "un-ROLL" as the name implies.

As I enter Guano Junction inside the Bat Hole, I check my equipment. Chef's hat? Check. Rubber axe? Check. Frilly skirt? Check. Dirty hobo gloves? Check. Pine-Fresh air freshener? Check (well, one can never be too careful). I am ready for anything.

According to the myth, Theseus goes into the labyrinth to slay the minotaur. Inside, he uses a piece of yarn that was given to him by his love, Ariadne, to mark his trail so he is able to find his way back out in the dark. In Kreta, however, you must enter the labyrinth as Ariadne and save Theseus before he becomes Minotaur feed.

Manuel Fallmann's latest offering on his MINDistortion site is a turn-based strategy game against the CPU, or a human opponent at the same computer. The object of Quarkz is to be the first player to reach the number of points designated as the victory condition by adding particles to the...

Tanks features classic projectile gameplay in a Flash game package that ups the ante with tank, ammo and weapon upgrades, and even multiplayer action to boot.

Caray Snake is a variation on the classic arcade game Snake where your tail gets longer with each object eaten, and you must avoid running into your tail. What makes this Flash game different is you move the snake only one square at a time using the arrow keys. The object is to clear the board to move on to the next. While the graphics of this gam...

Similar to games like Go and Othello, this Shockwave game is all about turning the tiles (or I suppose 'nodes' in this case) to your color. It's very simple to pick up and play, and yet the possibilities for each move become many. Frustrating and difficult, the challenge is fun if you put a little time into examining how each move affects the play.

Based on a simple game of Cat & Mouse, the gameplay is turn-based where for each move you make, the guard (or dog) also makes a move towards you. The objective is to make it to the goal before you are caught. There are rules of movement you will need to exploit if you are to escape the later levels. Everything about this game reeks of quality.

Played just like the old plastic game of Battleship that used red and white pegs to record hits and misses, except this Flash version does all the hard work for you. First position your fleet on the board, then all you have to do is click on a square to fire torpedoes.

If you like board games and you like playing against others over the Internet, give Conqueror! a try. This full-featured, multiplayer, turn-based strategy game is very similar to Risk, and yet its gameplay is a lot richer. An ingenious system of simultaneous turns means that you don't have to wait for other players to make their moves.