Effective, explosive stress relief on your mobile phone
In the annals of video game history, there is no finer an opportunity for endless explosive glee than the vertical shooter. Most vertical shooter games involve a little two-dimensional spaceship that flies only in one direction (up) and shoot lots of interesting projectiles at an abundant cache of enemies. These seemingly endless enemy spaceships apparently have figured out how to fly in many directions--including right at you, which is bad--unless your trigger finger is fast enough.
Naturally, if you've just had a stressful day at work and you're wedged between two New Yorkers on the subway as you drive home, you might have the urge to blow something up. This is when the vertical shooter is at its most valuable. Pop open your mobile phone, fire up the latest Robotech offering, a vertical shooter in every respect, and blow away thousands of virtual enemies until your stress is gone, you reach your subway stop, or your cell-phone's softkeys (the game's trigger buttons) wear out.
