The main program interface is sparse but intuitive. After choosing a mission, fairly simple menus let you customize your gear and choose your squad members. This game is a tweaker's dream, with hundreds of possible combinations of equipment for your gear. Instead of limiting your gear's equipment by weight, you're given a maximum threat level. It's a somewhat artificial limitation, but it gives you lots of flexibility if you're willing to risk balancing perks and flaws.
Controls are also highly customizable.
Out of the box, the game offers an almost Quake-like control setup using the mouse and the numeric keypad. This default has been the subject of much debate online, and while I had no trouble adapting to it, experienced MechWarrior players may want to shift to a setup taking advantage of joystick, pedals, and throttle controllers. Gears are more nimble than mechs, and in close-in combat, precise control is a must. If you work through the series of seven interactive training missions before entering combat, you should be comfortable with the controls before tackling real missions. Be warned, though, these can be very challenging.