Cobra Command is a very challenging game but it can tire you up too easily.
In Cobra Command you play the role of a chopper pilot. you shoot down enemies that engage you before they shoot you and you've got to avoid obstacles that coming your way before you crash into them.
Your mission is to destroy the opposing army. Why? just cause. The plot of the game isn't too deep. You fly a brand new chopper named the "Cobra Command" and you're the pilot who has been chosen to test it. What better way to test a new weapon than in the battle field.
You cannot fly freely. you can only control your chopper when alerted to go to a direction. If you won't move in time you're done for.
The game can get long and frustrating. especially when it's game over and there is no way to save your game.
Cobra Command is worth checking if you're a fan of the shoot em' up genre.