This is my version of the 80s classic, Choplifter. It started out as an experiment, to get a parallax scene moving effectively in Flash, and grew from there.
Control the helicopter movement with the mouse, left-click to fire. Use the weapons to shoot down the walls of the prisons. Land the helicopter next to the prison to rescue up to 4 hostages at a time. Return the hostages to your helipad. Repeat.
Each environment consists of 3 missions before it moves onto the next. The game will save your progress so the last level played can be accessed if you return.
If the control method doesnt suit then there are 3 variations to try, in the options menu. (Accessed by hitting ESC, in-game)