Kirby's Adventure Cheat Codes & Secrets
Complete collection of cheat codes, passwords, unlockables, and hidden secrets for Kirby's Adventure (1993).
Save System
Kirby’s Adventure uses battery-backed SRAM with three save slots — one of the few NES cartridges to do so. There is no password system. Progress is saved automatically after completing each stage. To delete a save file, hold Select + B while choosing it on the file select screen.
Unlockable Bonus Modes
Completing the main game unlocks additional modes selectable from the file select screen. These are persistent unlocks tied to your save file.
| Mode | How to Unlock | Notes |
|---|---|---|
| Extra Game | Beat the main game | Harder difficulty: enemies faster, more damage dealt |
| The Arena | Beat the main game | Boss rush against all bosses in sequence |
| Sub-Game Museum | Play each sub-game at least once | Replay Quick Draw, Egg Catcher, and Crane Fever freely |
| Sound Test | Available in Options from the start | Preview all BGM tracks and sound effects |
Extra Game details: Enemy attack power is roughly doubled and some enemy placements are altered. Kirby’s health drain from certain hazards is more aggressive. Completing Extra Game grants full 100% if you haven’t already reached it in the main file.
The Arena: You face every mid-boss and main boss back-to-back. Tomato items drop between fights based on your remaining health, but supplies are limited. You can bring a copy ability in from the overworld by holding it when you select The Arena. Crash and Mike are popular choices for early boss kills.
Warp Stars and World Skips
Hidden Warp Stars are concealed in specific stages throughout the game. They teleport Kirby forward by multiple worlds, bypassing everything in between. Warps are found by entering doors or pathways that appear to lead nowhere — usually blocked by a ceiling or wall that Kirby can fly or float through.
| Warp Location | Destination | Method |
|---|---|---|
| Vegetable Valley 4-4 | Butter Building (World 3) | Fly upward past the apparent ceiling near the stage exit |
| Ice Cream Island 2-3 | Grape Garden (World 4) | Enter the hidden door behind a star block formation on the upper path |
| Butter Building 3-4 | Orange Ocean (World 6) | Navigate through the rotating tower’s upper hidden room |
Finding hidden rooms: Most secret areas in this game are accessed by flying upward through false ceilings or entering doors that are obscured behind destructible star blocks. Carrying the Hammer or Stone ability helps break star block clusters quickly. If a room has an unusual number of star blocks stacked against a wall, treat it as a hint.
Using a Warp Star skips all stages and boss fights in the bypassed worlds. This also skips any sub-game tokens and ability rooms in those worlds, so it lowers your completion percentage. If you’re chasing 100%, avoid warps.
100% Completion Requirements
The game tracks a completion percentage on each save file, displayed on the file select screen.
| Category | What to Collect |
|---|---|
| Stage Completion | Clear every stage in all 7 worlds |
| Hidden Rooms | Find every secret room in every stage |
| Sub-Game Tokens | Collect the star tokens in each world that unlock sub-games |
| Boss Completion | Defeat every mid-boss and main boss |
Reaching 100% requires entering every hidden door and collecting every room in the game. The completion counter does not include Extra Game — it is tracked separately. Fully completing a save file at 100% changes the game’s ending slightly and gives you the most complete staff credits sequence.
Copy Ability Secrets
UFO — The Hidden Ability
UFO is not listed in any in-game ability room or hinted at in normal play. It is obtained by inhaling a specific enemy: the UFO enemy, which appears in only a handful of stages and is easy to miss.
- Stages where UFO enemies appear: Grape Garden and Yogurt Yard aerial sections
- UFO grants flight with a three-directional laser shot (Up, Forward, Down)
- UFO cannot be stored or transferred through a door in some circumstances — if Kirby takes a hit or the game transitions, the ability may vanish
- UFO is widely considered one of the strongest abilities in the game for general traversal and combat
Crash and Mike — One-Use Nukes
Both Crash (absorbed from Bomber enemies) and Mike (absorbed from Microphone enemies) deal massive damage to all on-screen enemies and bosses when activated with B, but are consumed immediately after use.
- Crash deals heavy damage to every enemy on screen
- Mike has three uses before disappearing — press B once for the full burst; the game cycles through three animation frames and the ability expires
- Both are effective in The Arena for skipping boss health phases
Ability Rooms
Every world contains at least one Ability Room — a door leads to a room where helper enemies offer copy abilities. These rooms are shown on the world map as a star icon. You are not forced to take any ability; you can walk through and leave.
Sub-Games
Three sub-games are available between stages as bonus rounds and in the Sub-Game Museum after unlocking.
| Sub-Game | Input | Notes |
|---|---|---|
| Quick Draw | Press A when prompted | First to draw wins; timing window shrinks in later rounds |
| Egg Catcher | Move with Left/Right | Catch Dedede’s eggs, avoid bombs; 3 bombs ends the game |
| Crane Fever | A to lower, B to grab | Claw crane; aim for point prizes rather than 1-UPs if score is the goal |
Sub-game results award 1-UPs and extra lives. Quick Draw in particular can be farmed for lives if you restart a sub-game opportunity from a save state — though on real hardware, the sub-game is locked to the point it appears on the world map.
Beneficial Glitches and Exploits
Sword Crouch Attack Wall Clip
Holding Down + B with the Sword ability causes Kirby to crouch and swing low. Against certain thin walls and sloped floor geometry, this can push Kirby’s hitbox through the surface. Used in speedruns to skip short sections in Vegetable Valley and Butter Building stages.
Infinite 1-UP Trick (Watermelon / Enemy Bounce)
In stages with a chain of enemies close together, Kirby can bounce continuously off enemies using the invincibility frames from each stomp. Each enemy defeated by a stomp chains into the next with an escalating 1-UP bonus (1, 2, 3… up to 5-UPs per hit in a chain). Setting this up in dense rooms — particularly in Yogurt Yard — can net several extra lives per attempt.
Swallowing Through a Door
If Kirby has an enemy inside his mouth and walks through a door, the swallow animation completes in the new room. In rare cases this causes the ability granted to be mismatched with what was inhaled. The exact ability depends on which enemy was swallowed and the internal room ID of the destination — not useful for consistent farming but notable for randomizing runs.
Sleep Skip
Absorbing the Sleep ability causes Kirby to fall asleep and be briefly immobile. However, pressing Start to pause and then unpausing immediately cancels the sleep animation early, saving several seconds. Useful when Sleep is the only available ability in a copy room and you need to clear the room quickly.
Developer Easter Eggs and Hidden Messages
HAL in the Stars
In several bonus chance rooms and certain background tile sets, the letters H, A, and L (for HAL Laboratory) are embedded in star formations in the background. This is most visible in the Vegetable Valley interstitial backgrounds when pausing and examining the starfield — a tradition HAL carried through several Kirby titles.
Dedede’s Gallery
During the ending sequence, King Dedede’s throne room contains paintings on the wall. Each painting depicts an earlier boss from the game in a cartoonish portrait style. These are only visible for a few frames during the scrolling credits sequence and are easy to miss at normal speed.
Sound Test Track Order
The Sound Test in Options lists tracks in internal ID order, not world order. Track 07 is the unused “alternate boss theme” — a slightly different arrangement of the main boss music that doesn’t appear in normal gameplay. It was either cut during development or reserved for a mode that didn’t ship.
Staff Roll Kirby Dance
If you let the staff roll run to completion without pressing any buttons, Kirby performs an extended dance animation after the final credit fades. Pressing any button during the roll skips to a static end screen and cuts the animation short. The full dance is approximately 45 seconds and is only visible if you wait it out.
Tips for Real Hardware vs. Emulator Play
On real NES hardware, the battery in original Kirby’s Adventure cartridges is now over 30 years old — many carts have dead saves. If your cartridge won’t hold a save, the game effectively becomes a single-session challenge. Emulators with save states sidestep this entirely and are recommended for 100% completion runs given the game’s length. The Sub-Game Museum unlock and Arena mode both require a functioning save, so battery health matters for the full experience.