Sega master system game emulated in Java gear. Resolution can be modified in game. Run the game , press (*) to enter the menu , enter "Settings" , change "Scale" to "TRUE" - start game. To fill out the entire screen of 176x208 , 176x220 , 240x320 or 352x416 screen sizes You can rotate the game by 90 or 270 degrees! Confirmation/fire key is "5".