Super Energy Apocalypse, 2nd place prize winner in our 5th game design competition, plays a bit like a tower defense game, in that most of the time is spent getting ready for the next wave, and the player is offered no control over the targeting of the enemies. Planning for the battle is the critical strategic element, rather than the battle itself. The zombies come out only at night, so use the daylight wisely!

ElectroCity is fun little Flash game intended "to spark an interest and lay an unbiased foundation for later learning" about the issues involved in power generation, cost, and environmental impact. It is obviously a very simplistic look at those issues, intended to give a broad overview and invite further research on the part of the player. It's also not a bad little town sim game to boot.

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.