Double Dragon Reloaded runs by default at 640X480, but you can change that, and more, in the options screen. These include numerous video, sound, control, and system options. And, yes, gamepads are supported. There is also a How to Play section explaining the basics and the numerous moves you can use.
From the minute the game start, you will feel the nostalgia, including the graphics, controls, and music.
We had a great time playing Double Dragon Reloaded and think you will too.