Review defense task force – oprainfall

As the cities of humanity grew, their appetite for energy became more voracious. It was no secret that one day the energy sources would run out. They extracted power from a wide range of sources, including everything from fossil fuels to nuclear power. Unfortunately, the day of reckoning came much sooner than anticipated and the world was running out of power. Greed, mismanagement and waste made it a reality sooner than it should’ve been. The desperate lack of power sparked energy wars and the world began to crumble. Then, a strange wormhole appeared just outside the solar system and from it emerged an ocean planet with an abundant supply of zero point energy crystals. However, obtaining them turned out to be harder than expected, as alien creatures began to emerge from the sea to stop the energy collectors.


You are part of the Defense Task Force, and have been charged with the job of protecting the collector on your energy collection platform. Can you hold off the hordes and collect the precious energy crystals?

Defense Task Force is a tower defense game. You have an arsenal of about ten types of towers to use strategically to hold off the advancing alien hordes. They range from machine gun and missile turrets up to plasma beam and tesla towers. As your defenses neutralize more and more enemies, you will earn energy. This energy can be used to build or upgrade towers. Upgrades are not available until you unlock them via the research screen.

Beyond research, energy collected in levels can also be used to unlock new blueprints. Each time you start a game, you get to choose a blueprint to deploy, which defines the size and shape of your platform. The screenshot above is the starter blueprint, which gives you a small and very limited platform to work with. You can research bigger and better blueprints that give you more room and many more tower pads to give you room to expand your defenses much further. Blueprints do have an energy cost each time you deploy them, but the first blueprint costs nothing to deploy when starting a new battle. This way you can’t get stuck in a situation where you don’t have enough energy to deploy a blueprint and not be able to play anymore.

The X pads are tiles where you can build towers. Some of them are on the paths because you can force the aliens to take different paths by blocking certain ones with towers. Part of the trick to surviving longer is to use bigger blueprints and of course to create the longest possible paths for the aliens to follow. Space time towers also help, as they slow down aliens within their area of effect.

None too happy about your energy collection efforts on their world, the aliens emerge from the sea to attack your platform. Monster waves are procedurally generated (as are the background terrains) and slowly ramp up in size and power. They are also endless, at least until your collector dies. Every now and then, a more intense than average wave will appear to keep you on your toes. If your defenses aren’t good enough, this can cripple them. This is because the turrets nearest the collector are still firing on the remnants of that bigger wave, leaving the next incoming wave free to make it further in since they’re taking less weapon fire than usual.

You can see an info icon on the left edge of the right panel in the screenshots. This will pull up the in-game encyclopedia description for the selected tower or alien. You can view the encyclopedia in its entirety between missions. The red bar in the lower left is the collector’s health. The blue bar shows your progress toward conquering this area, and the green bar shows surplus energy collected in this mission. You can mouse over to see the exact amount and how much you spent to deploy your chosen platform blueprint.