Contribute correction: MSX Invaders! (unreleased)

  _  __   __   __     _____   _    _   
 | |/ //  \ \\/ //   / ___// | || | || 
 | ' //    \ ` //    \___ \\ | || | || 
 | . \\     | ||     /    // | \\_/ || 
 |_|\_\\    |_||    /____//   \____//  
 `-` --`    `-`'   `-----`     `---`