Along with kicking the visuals and audio up a notch with new sounds and a better interface, Desktop Tower Defense 1.5 includes several new (and expanded) challenge modes to twist your brain in a knot and/or induce frustration. New towers, such as the Boost unit that increases damage nearby towers dish out, helping you combat new enemies such as the morph and dark creeps. The game is also available in five languages, including English, Spanish, German, French and Italian.

As with other tower defense games, you earn cash by obliterating the attackers that creep their way around any one of several maps available to play. With the cash you can purchase additional turrets or upgrade existing ones. But it is the Combos that add a level of depth to this tower defense game not present in other games like it. The combinations are many, and the resulting strategy becomes deep.

ElectroCity is a flash game from Genesis Energy, New Zealand's leading generator and retailer of electricity. It is intended "to spark an interest and lay an unbiased foundation for later learning" about the issues involved in power generation, cost, and environmental impact. Sounds fun already, doesn't it?

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. Everyone (up to four players) sets up their shot simultaneously and secretly, and the tanks all fire at the exact same time. Double-kills are not unheard of.

You are a network security engineer in the year 3000. You have a limited budget to protect your companies server from wave after wave of malicious viruses.

Use your resources to battle the other World Leaders for World Domination!

Create your character then take part in the Gold Rush and other game scenarios in the wacky Wild West!

A live action strategy game written for fun in flash. You have to stop your enemies, or 'creeps', from traveling all the way across the screen. Tower pieces can be purchased and placed on the map to kill the creeps before they make it across.

The International Strategy for Disaster Reduction group has not drenched their game in messages and important life lessons that we all should follow (lest tragedy befall us all). Instead we get a game which is easy to pick up, figure out and get in to, but hard enough to challenge and reward not only planning but learning about successful planning.

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.