Boulder Dash XL is a remake of the original game which was released in 1984, but also contains a good few new modes as well as a Retro mode that lets you experience the look and feel of the original game. (wolfsgamingblog.com)
This game isn't just a repeat of the game before in fact they've added quite a few new modes and you can tell that a lot of thought and effort has gone into this edition of the game. (metacritic.com)
Some modes will be familiar to fans, such as Pacifism or Deadline, but Lucid Games introduces a few new modes here as well. (darkstation.com)