Oh man, i'll have to delete those entries from the leaderboard, sorry mate. Thanks for finding that bug though i'll update the game on friday.
There won't be a leaderboard in the final game (it's singleplayer, and players can easily cheat on their machine). The final game will have a fog of war and an almost endless space to explore, with planets, asteriods and the likes.
Ahahaha
A bit late to say that only scores above 60k used cheating? It’s pretty easy to reach ~45k on “hard” difficulty; the real challenge is not having your computer freeze.
Now, if the goal is to prevent the entire leaderboard from being filled with the same name, I think it would be interesting to restrict repetition.