Radiant Silvergun Cheat Codes & Secrets
Complete collection of cheat codes, passwords, unlockables, and hidden secrets for Radiant Silvergun (1998).
Hidden Options and Title Screen Codes
Radiant Silvergun on Sega Saturn ships with a layered options system that goes beyond what the main menu reveals. At the title screen, before pressing Start to enter the standard menu, hold L + R and press Start to reveal an extended configuration panel with additional difficulty sliders and enemy density parameters not surfaced in normal play. These were likely left in for location-testing purposes and never removed from the retail build.
To access the hidden sound test, navigate to the Options menu from the title screen, highlight the BGM entry, then hold X + Z simultaneously and press A. This drops you into a standalone music player where all of Hitoshi Sakimoto and Mitsuhito Tanaka’s compositions can be auditioned, including several ambient cues that only trigger during cutscenes and are otherwise easy to miss in play. The sound test was a staple of Treasure’s Saturn output (present in Guardian Heroes and Gunstar Heroes as well) and Silvergun is no exception.
| Code | Effect | Platform |
|---|---|---|
| L + R + Start at title | Extended options panel with hidden sliders | Saturn |
| Options menu → BGM → X + Z + A | Full sound test / music player | Saturn |
| Hold Start during boot | Skip story intro cinematics | Saturn |
| L + R + Z at title screen | Enable controller vibration rumble pack option | Saturn |
Stage Select and Chapter Access
Radiant Silvergun does not offer a traditional stage-select password system — Treasure instead gates chapter access through completion. In Saturn Mode, clearing the game once unlocks the ability to start from any previously reached chapter. The chapter select screen appears after the Tetra Star logo during a subsequent New Game, presenting the six chapters plus the prologue and epilogue segments as discrete entry points.
For players who want to jump to later stages without a prior clear, a credit-based workaround exists. In Arcade Mode, reach Stage 3 (the Eraser ship encounter) without using a continue, then let the ship die deliberately. On the Continue? screen, press and hold B + C while pressing Start to restart from Stage 3 with full credits restored. This was discovered by Japanese players in late 1998 and spread through the shooter community via Gamest magazine tips. It does not carry weapon experience forward, so weapons restart at level one — but it is the fastest route to practice later content without grinding early chapters.
| Code | Effect | Platform |
|---|---|---|
| Complete game once | Unlocks chapter select on subsequent playthroughs | Saturn |
| Die on Stage 3 → B + C + Start on continue screen | Restart from Stage 3 with credits refilled | Saturn |
| Arcade Mode title → hold Y + Z → press Start | Force-select Arcade Mode regardless of previous save state | Saturn |
Weapon Leveling Exploits and Power Tricks
The weapon experience system is Radiant Silvergun’s defining mechanic and also its richest vein of exploitable depth. Each of the seven weapons levels from 1 to 16 through use against enemies matching their color coding. The system interacts with itself in ways Treasure likely intended but never documented.
The Sword Loop is the most powerful legitimate exploit in the game. Weapon 7, the Sword, damages enemies by direct physical contact with the ship’s hitbox extended. Crucially, contact with a Sword kill on a same-color chain does not reset the chain counter — it extends it. On Stage 2’s mid-boss, players discovered that repeatedly grazing the Sword through the rotating shield segments, which are coded to the Sword’s color band, generates an escalating multiplier that can push a single encounter’s score into the tens of millions. Sword contact kills also credit experience to all seven weapons simultaneously at a reduced rate, making it a universal leveling strategy.
The Spread Vulcan Level Plateau Trick: Weapons plateau at level 16, but the experience bar continues filling after that point. When you carry a maxed weapon into a new chapter in Saturn Mode, the overflow experience is secretly banked and transferred to your next-highest weapon at a 3:1 ratio. This means letting Weapon 1 (Vulcan) reach 16 early and continuing to use it throughout Chapter 1 will passively level Weapon 2 (Homing Laser) by approximately four levels before you even start using it. Efficient players plan their weapon rotation around this hidden transfer mechanic.
Suicide Exploitation for Weapon XP: In Saturn Mode, dying does not reset weapon experience. Players use this deliberately — on enemy-dense screens where gaining experience safely is risky, intentionally dying and respawning can be faster than careful play, since the XP from the kill streak before death is fully retained.
| Technique | Benefit | Applicable Mode |
|---|---|---|
| Sword same-color chain on shield segments | Massive score multiplier; universal weapon XP | Saturn + Arcade |
| Overflow XP banking past level 16 | Passive leveling of secondary weapons | Saturn Mode only |
| Deliberate death during dense waves | Retain XP without risking multiplier collapse | Saturn Mode only |
| Homing Missile (W4) on same-color chains | Fastest single-weapon leveling in early chapters | Saturn + Arcade |
Score-Based Unlockables and Extra Credits
Radiant Silvergun gates continue replenishment behind score thresholds in Saturn Mode. The game does not advertise these checkpoints, but the community mapped them through systematic play:
- 500,000 points: +1 credit added to pool
- 2,000,000 points: +1 credit
- 5,000,000 points: +1 credit
- 10,000,000 points: +1 credit
- 20,000,000 points: +1 credit (cap)
These bonuses stack with the initial credit allotment, meaning a skilled player on a high-scoring run effectively never runs out of continues. The credits are added silently — no fanfare — so many players never realize the system exists. Reaching the 20 million threshold on a single credit clear is considered a benchmark achievement in the Japanese Saturn shooting community.
Separately, the Credit Clear Bonus applies a flat 10,000,000 point bonus to your final score if you complete the game without using a continue. This bonus does not appear during play — it is added at the end screen only, which led to some confusion among early players about their actual performance scores.
Saturn Mode Exclusive Content
The Saturn port added an entirely original Story Mode that reframes the arcade game’s six chapters inside a longer narrative with anime-style cutscenes directed by Hiroshi Iuchi. Several pieces of content in this mode have no arcade equivalent:
Chapter 0 (Prologue) is accessible only from the chapter select after a first clear. It depicts the origin of the Stone-Like artifact and runs approximately twelve minutes of cutscene with minimal gameplay. Completionists seek it out for the lore context it provides for the main narrative.
The Tetra Star Gallery unlocks after clearing Saturn Mode on any difficulty. On the Continue screen after credits roll, hold A + B + C and press Start. This loads a static image gallery of approximately 40 pieces of concept art, ship designs, and character illustrations from the development process — material that was never published in any official artbook. The gallery cycles automatically or can be advanced manually with the D-pad.
Hidden Difficulty: Omake Mode is selectable by highlighting the difficulty setting in Options, scrolling past Hard, and pressing Z. The difficulty label changes to a Japanese character string roughly translating to “Bonus.” Omake Mode increases enemy bullet speed by 40% and doubles the number of simultaneous on-screen projectiles, but also sets your weapon levels to 16 at game start. It was intended as a reward mode for players who had mastered normal difficulty and wanted a pure bullet-pattern challenge without the leveling grind.
| Unlockable | Trigger | Platform |
|---|---|---|
| Chapter 0 Prologue | Complete game once, access chapter select | Saturn |
| Tetra Star Gallery | A + B + C + Start at credits continue screen | Saturn |
| Omake Mode | Scroll past Hard in Options, press Z | Saturn |
Xbox 360 / XBLA Version Secrets
The 2011 Xbox Live Arcade port developed by Treasure introduced online co-op and achievement integration but preserved and slightly expanded the hidden content from the Saturn original.
Legacy Save Import: Players with a Saturn save file on an original hardware memory cartridge could not directly import data, but the XBLA version included a “Legacy Score” entry screen accessible from the main menu by pressing LB + RB + Back simultaneously. This loaded a static leaderboard position based on a manually entered score, allowing players to record their personal Saturn high scores in the XBLA ranking system as a historical archive entry.
Score Attack Mode in the XBLA version has a hidden “no-continues” flag visible to other players on leaderboards — scores marked with a specific icon denote credit-clear runs, separating them from multi-continue completions.
| Code | Effect | Platform |
|---|---|---|
| LB + RB + Back at main menu | Legacy score entry for Saturn records | Xbox 360 |
| Complete Score Attack without continues | Credit-clear marker on leaderboard | Xbox 360 |
| Hold LT + RT during stage loading | Enable frame-rate display overlay | Xbox 360 |
Beneficial Glitches and Combat Exploits
The Slash Invincibility Window: When the player ship performs the Sword slash animation, the hitbox contracts briefly to roughly 40% of its normal size for approximately eight frames. This is not documented anywhere in the manual, but was verified through frame-counting analysis by the Japanese Saturn community around 2001. Players use this to intentionally time Sword slashes through bullet curtains that would otherwise be undodgeable, effectively using the weapon as a defensive invincibility tool in addition to its offensive role.
Boss Pattern Stalling: Several bosses in both Arcade and Saturn modes have attack pattern timers that reset if the player enters a specific screen region. The Chapter 3 boss (the rotating segment fortress) resets its spread-fire cycle if the player ship crosses the vertical midpoint of the screen during the transition between Phase 2 and Phase 3. Skilled players exploit this to indefinitely loop the easier Phase 2 pattern while scoring chain bonuses before allowing the phase transition to proceed.
Chain Counter Preservation on Death (Saturn Mode only): If a player dies within four frames of a chain kill — specifically on the same frame the chain bonus is calculated — the chain counter resets but the score bonus from that chain is credited twice. This is a genuine scoring glitch, not an intended mechanic, and produces visible score anomalies in replay data. It is not reproducible on demand but accounts for some of the highest recorded Saturn Mode scores.
Developer Easter Eggs and Hidden Details
Treasure embedded several nods to their own catalog within Radiant Silvergun’s enemy design. Stage 4 includes a mid-section where the background scrolls past a destroyed space station whose structural layout, when viewed from above, forms a silhouette closely resembling the level 7 fortress from Gunstar Heroes. This is visible for only a few seconds and requires pausing frame-by-frame in a recording to confirm.
The final boss phase transitions are accompanied by audio samples that, when the BGM is isolated and the samples are played in isolation at half speed, contain fragments of a melody that matches the Gunstar Heroes stage 1 theme. Treasure’s sound team acknowledged this in a 2003 Gamers Republic interview, describing it as an in-joke for players who owned both games.
The staff roll in Saturn Mode scrolls names in the order they appear — but the director credit (Hiroshi Iuchi) is displayed for exactly twice the duration of any other name. Iuchi confirmed in a later interview that this was deliberate and self-deprecating, referencing his tendency to overwork during the development crunch.
Advanced Community-Discovered Techniques
The Score Chain Trinity: Experienced players discovered that simultaneously triggering kills from Weapon 1 (Vulcan), Weapon 4 (Homing Missile), and Weapon 7 (Sword) on the same enemy cluster within a three-frame window produces a combined color bonus that scores all three weapons’ chain multipliers additively rather than taking the highest. This requires specific positioning and weapon cycling that takes considerable practice to execute consistently but can produce score bonuses six to eight times higher than single-weapon chains on the same cluster.
Credit Extension via Stage 5 Loop: In Arcade Mode, Stage 5’s opening section contains a wave of enemies that respawns indefinitely if the player avoids advancing the scroll trigger. The trigger is tied to a specific enemy count being cleared from the right side of the screen. By staying in the left corridor and destroying only enemies from the left spawner, players can farm weapon experience and points indefinitely. The technique was used in early speedrun and high-score records before being considered an undesirable exploit by the community, and most modern leaderboards explicitly prohibit runs that utilize it.