

Along with scientist Professor Anders and the Fire's holographic AI construct Serina, they uncover a plot in which an Arbiter, in charge of the Covenant forces on the planet, gets his hands on a mysterious superweapon left by the long-extinct Forerunners. Halo Wars' gameplay and control scheme are introduced through two simple tutorials, and though a few more lessons would've helped to flesh out all of the unit types, it's not difficult to figure out the roles of the different UNSC and Covenant forces. The controls function adequately, but you're quite limited as to what you can actually do with them. For example, you can select all units, all units onscreen, all units of a specific type, or all units within a small radius, but you can't assign units to custom groups. This makes it difficult to manage units when you're trying to fight a battle on two fronts. Combat is streamlined to just two buttons, so you can easily point out the enemy you want vanquished, send your soldiers after them, and use special attacks where applicable. In terms of churning out an army, you need to actually click on a building to access its build menu. You can return to your base with a tap of the D pad, but even that can be frustrating in the heat of battle. Although you can set up global and base-specific rally points, you can't create them for different unit types. Setting them too close to your bases also creates a gridlock that some units have trouble manoeuvering through. It would've worked better if you could access the build menu at any point, but for the most part the controls work well in a variety of situations. The camera can also be frustrating though you can zoom right in, you can't pull the camera out far enough to get anything resembling a bird's-eye view of the action.

One of the best things about Halo Wars is controlling the iconic units from the series. Leading a barrage of marines, Spartans, Warthogs, and Scorpion tanks is great, and all-new units are a welcome addition to the UNSC forces. Flamethrowers, mechlike Cyclopes, and the Cobras and Wolverine vehicles work well against infantry, structures, vehicles, and aircraft respectively. You can also control up to three of the series' iconic Spartan soldiers at a time. The Spartans are not only a lot tougher than regular UNSC infantry, but they can also hijack enemy vehicles, or pilot a friendly vehicle to boost its effectiveness. Although there may not be a great variety of units at your command, each has a number of upgrades that offer significantly better firepower or defences. The Covenant forces also have powerful infantry at their disposal, including energy-sword-equipped Elites, Brutes, and Hunters, which are particularly useful against vehicles. Wraith battle tanks, powerful Locusts, and the gargantuan Scarabs pack a serious punch against the UNSC forces, and the rock-paper-scissors dynamic between aircraft, vehicles, and infantry ensures a relatively equal footing between the teams. Given that the Covenant units are just as much fun to play with as the UNSC's it's a real shame that the faction didn't get its own playable campaign.
