- Cut Song: Both the Core theme and the boss music have completely different alternate versions. Neither are used throughout the game.
- Let's Play: By DeceasedCrab. There's also an annihilation one by Beholdmystrength.
- Name's the Same: "Cruiser Tetron" was the name of an octopus-like core battleship from the Gradius series and its Spin-Off, Salamander.
Trivia / Hero Core