Flight Control HD is an attractive, addictive game in which you play an air-traffic controller guiding an endless armada of incoming aircraft to safe landings (you hope!) at a crowded airport. Flight Control makes great use of the iPad interface, as you use your finger to trace a trajectory for each approaching craft, sending jets, seaplanes, helicopters, et al. to various runways and landing pads. The controls are incredibly simple and intuitive, which contributes to Flight Control's surprisingly rich, devilishly addictive gameplay.
The game starts out at a leisurely pace, but as aircraft enter from every edge of the screen with increasing frequency, the sky quickly becomes filled with aircraft, all traveling at different speeds with overlapping trajectories. One of the first big iOS hits, Flight Control has only improved with age, adding many maps of varying difficulties as well as some interface improvements (such as a fast-forward button) and a few gameplay wrinkles on some maps, like changing wind conditions that close certain runways and an occasional emergency-landing plane that you have to avoid.
The game also looks great in the more expensive iPad-only version, with both large and small maps. Most significantly, Flight Control has added multiplayer, on the same device (shared screen or split screen, with multitouch), on the same network (over Wi-Fi or Bluetooth), or using Game Center. The Game Center games aren't perfect, and you face the usual problems of match-finding and opponents dropping out, but overall multiplayer is an excellent addition to Flight Control.