Develop a space-themed puzzle game in Java where the players have to journey through the galaxy, make decisions for their crew, and uncover secrets while facing various challenges that require problem-solving skills. The game should have multiple levels with increasing difficulty, each with a different theme and set of puzzles to solve. The visual elements and graphics should be eye-catching and have a science fiction tone to enhance the immersive experience. The game should also include a leaderboard system that displays the top scores achieved by players to create a competitive environment.
This prompt doesn't seem malicious.