- Keep Circulating the Tapes: For the longest time, copies of the Sega Saturn port went for as high as $200 American on online shops. Rescued in 2011 with the Xbox Live Arcade at the cost of roughly $10 American.
- No Export for You: Treasure didn't bother releasing this game overseas despite critical acclaim from foreign critics. This was first averted in 2011 with the internationally released port, as a result.
- Remade for the Export: Featuring High Definition visuals (such as true alpha blending implementation, something the Saturn couldn't handle), local/online Cooperative Multiplayer, leaderboards, download/share replays over Xbox Live Arcade and "Ikaruga Mode", using the scoring mechanics of the Spiritual Successor, accessed by unlocking an achievement within Ikaruga.
Trivia / Radiant Silvergun