
In *Super Mario Maker 2*, obtaining a Poison Mushroom—a unique power-up that harms Mario instead of helping him—requires a bit of creativity and specific level design. Players can create a Poison Mushroom by placing a regular Super Mushroom on top of a Poisoned ? Block, which turns the mushroom into its harmful counterpart. This mechanic allows level creators to add an extra layer of challenge or surprise to their courses, as unsuspecting players may accidentally grab the Poison Mushroom, causing Mario to shrink or lose a life. Mastering this technique not only enhances the complexity of custom levels but also showcases the game’s versatility in combining different elements to create unexpected outcomes.
| Characteristics | Values |
|---|---|
| Game | Super Mario Maker 2 |
| Item | Poison Mushroom |
| Function | Harms Mario by shrinking him or causing damage |
| Availability | Available in the game's item catalog |
| Unlock Method | Unlocked by default in the game |
| Placement | Can be placed on the ground or in blocks |
| Interaction | Mario collects it, resulting in negative effects |
| Theme Compatibility | Works in all themes (e.g., Super Mario Bros., Super Mario 3D World) |
| Special Notes | Often used in levels designed to challenge or troll players |
| Combination Possibilities | Can be combined with other items like shells or enemies for added effects |
| Level Editor Access | Accessible in the level editor under the item selection menu |
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What You'll Learn

Unlocking the Poison Mushroom Power-up
In *Super Mario Maker 2*, unlocking the Poison Mushroom power-up requires a combination of specific in-game actions and progress. The Poison Mushroom is a unique item that harms Mario instead of helping him, making it a creative tool for level designers. To unlock it, you must first complete certain objectives within the game’s framework. Start by playing through the Story Mode, where you’ll rebuild Princess Peach’s castle by completing levels and earning coins. As you progress, you’ll unlock new items and tools for the Course Maker mode. The Poison Mushroom becomes available once you’ve cleared specific milestones in Story Mode, typically after completing a certain number of jobs or reaching a particular point in the campaign.
Once you’ve progressed far enough in Story Mode, the Poison Mushroom will appear in the Course Maker’s item selection. To access it, enter the Course Maker mode and navigate to the item menu. The Poison Mushroom is categorized under the "Special" or "Power-up" section, depending on the game’s organization. Ensure you’ve unlocked all preceding items by completing Story Mode tasks, as the game gates certain tools behind progress. If you’re unsure whether you’ve unlocked it, check your in-game progress or revisit Story Mode to complete any remaining jobs.
Another method to unlock the Poison Mushroom involves participating in the game’s online features. By playing and completing levels created by other users, you can earn Maker Points and unlock additional items. While this method is less direct, it complements Story Mode progress and ensures you’re engaging with the game’s full range of content. Focus on completing levels that reward you with coins or special items, as these contribute to unlocking new tools in the Course Maker.
For players who prefer a more structured approach, refer to the in-game unlockable items list to track your progress. The Poison Mushroom is typically unlocked after obtaining other power-ups like the Super Mushroom or Fire Flower. If you’re missing any prerequisites, revisit earlier levels in Story Mode or explore the Course World to fill in the gaps. Patience and consistent gameplay are key, as the game gradually unlocks items as you meet its requirements.
Finally, ensure your game is updated to the latest version, as Nintendo occasionally adds new items or adjusts unlock conditions through patches. If you’re still unable to find the Poison Mushroom after meeting the criteria, check the game’s official forums or guides for troubleshooting tips. Once unlocked, experiment with the Poison Mushroom in your levels to create unique challenges for players, adding a twist to traditional Mario gameplay.
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Placing Poison Mushrooms in Levels
One of the most common methods to create a Poison Mushroom is by using a Dry Bones enemy. In the level editor, place a Dry Bones near the Super Mushroom. When Mario defeats the Dry Bones, it will leave behind a bone. If the bone interacts with the Super Mushroom, it will instantly transform it into a Poison Mushroom. This method is straightforward and works well in most level themes, though it requires precise placement to ensure the bone lands on the mushroom.
Another technique involves using a Thwomp or a similar falling obstacle. Place a Super Mushroom directly beneath a Thwomp, ensuring it’s aligned perfectly. When the Thwomp falls, it will hit the mushroom and turn it into a Poison Mushroom. This method is more challenging because the timing and positioning must be exact, but it adds an element of surprise for players. Experiment with different heights and distances to master this technique.
For underwater levels, you can use a Cheep Cheep to transform a Super Mushroom into a Poison Mushroom. Place the mushroom in the water and position a Cheep Cheep so that it swims directly into it. The impact will cause the mushroom to change. This method is particularly useful in aquatic themes where other enemies or obstacles might not be as effective. Ensure the Cheep Cheep’s path is clear to avoid unintended collisions.
Lastly, consider using a POW Block for a more dynamic approach. Place a Super Mushroom on the ground and position a POW Block nearby. When activated, the POW Block will shake the screen and turn the mushroom into a Poison Mushroom. This method is visually striking and can be used to create memorable moments in your level. However, be mindful of the POW Block’s range and ensure it’s placed close enough to affect the mushroom.
By mastering these techniques, you can strategically place Poison Mushrooms in your *Super Mario Maker 2* levels to challenge players and add unique twists to your designs. Experiment with different combinations and themes to create levels that are both engaging and memorable.
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Using ON/OFF Switches for Activation
In *Super Mario Maker 2*, obtaining a Poison Mushroom often requires creative level design, and one effective method is using ON/OFF Switches to control its activation. These switches are versatile tools that allow you to manipulate the appearance and behavior of objects, including the Poison Mushroom. To begin, place an ON/OFF Switch in your level. This switch will act as the trigger for the Poison Mushroom to appear or disappear based on its state. Ensure the switch is easily accessible to the player, as it will be a key element in the puzzle or challenge.
Next, use the ON/OFF Switch to control a ? Block or a P-Switch that contains the Poison Mushroom. When the switch is activated (turned ON), the block or P-Switch will become active, allowing the player to interact with it. For example, if you place a ? Block containing the Poison Mushroom and connect it to the ON/OFF Switch, the block will only be usable when the switch is turned ON. This creates a clear condition for the player: they must activate the switch to access the Poison Mushroom.
To add complexity, combine the ON/OFF Switch with other mechanics, such as Tracks or Thwomps, to create a timed challenge. For instance, place the switch in a location where the player must quickly activate it before a hazard blocks their path. Once the switch is turned ON, the Poison Mushroom will become available, but only for a limited time. This encourages quick thinking and precise timing, making the level more engaging.
Another approach is to use multiple ON/OFF Switches to control different elements of the level, including the Poison Mushroom. For example, one switch could activate a bridge or platform, while another controls the appearance of the Poison Mushroom. This requires the player to manage multiple objectives, adding depth to the level design. Ensure the switches are clearly labeled or visually distinct to avoid confusion.
Finally, test your level thoroughly to ensure the ON/OFF Switch mechanics work as intended. Verify that the Poison Mushroom appears and disappears correctly based on the switch’s state, and adjust the placement of objects or switches if necessary. By mastering the use of ON/OFF Switches, you can create intricate and challenging levels that reward players for understanding and manipulating the mechanics to obtain the Poison Mushroom.
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Combining with Other Items for Effects
In *Super Mario Maker 2*, combining a Poison Mushroom with other items can create unique effects and challenges for players. One effective strategy is to pair the Poison Mushroom with On/Off Switches or P-Switches. By placing a Poison Mushroom behind a block that only becomes accessible when a switch is activated, you can create a surprise hazard for players who trigger the switch expecting a power-up. This combination forces players to think twice before flipping switches, adding a layer of strategy to your level design.
Another creative way to combine the Poison Mushroom is by using Conveyor Belts or Moving Platforms. Place the Poison Mushroom on a moving platform that transports it toward the player, making it harder to avoid. This setup works especially well in tight spaces or areas where the player has limited mobility. Combining this with Thwomps or Spikes can further increase the difficulty, as players must dodge both the Poison Mushroom and other hazards simultaneously.
For a more dynamic effect, pair the Poison Mushroom with Wings or Super Mushrooms placed nearby. This creates a psychological dilemma for the player: do they risk shrinking to avoid the Poison Mushroom, or do they take the power-up and hope to outmaneuver the hazard? This combination is particularly effective in levels where the player’s size affects their ability to progress, such as in areas with small pipes or tight gaps.
In underwater levels, combining the Poison Mushroom with Bubbles or Cheep Cheeps can add an extra layer of challenge. Place the Poison Mushroom in a stream of bubbles or near a school of Cheep Cheeps, forcing the player to navigate through moving obstacles while avoiding the hazard. This setup is ideal for levels where the player is already under pressure, such as those with rising water or limited air supply.
Finally, consider using the Poison Mushroom in conjunction with Clear Pipes or Warp Boxes. Place the Poison Mushroom inside a Clear Pipe that the player must enter to progress, or hide it within a Warp Box that transports the player to a new area. This combination adds an element of surprise, as players may not expect a hazard in what seems like a safe or beneficial item. By thoughtfully combining the Poison Mushroom with other items, you can create memorable and challenging levels in *Mario Maker 2*.
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Testing and Sharing Poison Mushroom Levels
Once you’ve designed a level featuring the Poison Mushroom in *Super Mario Maker 2*, the next critical steps are testing and sharing it effectively. Testing ensures your level is both functional and enjoyable, while sharing allows you to showcase your creativity to the community. Here’s a detailed guide on how to approach these steps.
Testing Your Poison Mushroom Level
Begin by playing through your level multiple times to identify any unintended glitches or unfair challenges. Pay close attention to the placement of the Poison Mushroom—ensure it’s accessible but not too easy to find. Test different scenarios, such as what happens if Mario shrinks after touching the Poison Mushroom or if he dies immediately. Use the game’s built-in testing tools, like the ghost player or the fast-forward feature, to simulate various playstyles. If possible, have a friend or another player test your level to get fresh feedback. Look for areas where players might get stuck or frustrated, especially around the Poison Mushroom mechanic, and adjust accordingly.
Fine-Tuning Difficulty and Design
After initial testing, refine your level to strike a balance between challenge and fairness. Ensure the Poison Mushroom is integrated into the level’s theme and doesn’t feel out of place. For example, if your level is themed around a haunted house, place the Poison Mushroom in a spooky, hidden area. Adjust enemy placements, platforming sections, and power-ups to complement the Poison Mushroom’s effect. If the level is too difficult, consider adding extra lives or checkpoints. Conversely, if it’s too easy, introduce more obstacles or time-based challenges. The goal is to create a memorable experience that highlights the Poison Mushroom’s unique mechanic.
Sharing Your Level with the Community
Once your level is polished, upload it to *Super Mario Maker 2*’s Course World for others to play. When sharing, provide a clear and enticing title that hints at the Poison Mushroom’s presence without giving away its location. Use tags like "puzzle," "challenge," or "trick" to attract players who enjoy unique mechanics. Write a brief description in the course details, such as "Can you survive the Poison Mushroom’s curse?" to pique curiosity. Consider recording a video of your level and sharing it on social media platforms like YouTube or Twitter to reach a wider audience.
Engaging with Player Feedback
After sharing your level, monitor player feedback through comments and clear rates. Take constructive criticism seriously and use it to improve your level further. If players consistently struggle with a specific section, revisit your design and make adjustments. Engage with players by responding to comments and thanking them for their input. This not only helps you grow as a level designer but also builds a positive reputation within the *Mario Maker 2* community.
Iterating and Creating New Challenges
Finally, use the experience of testing and sharing your Poison Mushroom level to inspire future creations. Experiment with different themes, mechanics, and difficulty levels to keep your designs fresh. The Poison Mushroom is just one of many tools at your disposal, so consider combining it with other elements like ON/OFF switches, Thwomps, or moving platforms for even more creative challenges. By continuously testing, refining, and sharing your levels, you’ll become a master of *Super Mario Maker 2*’s endless possibilities.
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Frequently asked questions
The poison mushroom is not an unlockable item in the traditional sense. It is a special item that can be obtained by placing a mushroom on top of a poison puddle in the Super Mario 3D World theme.
No, the poison mushroom can only be created in the Super Mario 3D World theme by placing a mushroom on top of a poison puddle. It is not available in other themes.
When a player touches a poison mushroom, it will shrink them down to a smaller size, similar to the effect of a mini mushroom. However, it also deals damage to the player, making it a hazardous item to include in levels.
Yes, you can use the poison mushroom in night theme levels by first creating it in the Super Mario 3D World theme and then copying and pasting it into a night theme level of the same style.
When using poison mushrooms, consider placing them in areas where players might accidentally touch them, such as narrow platforms or hidden blocks. You can also combine them with other hazards, like enemies or moving platforms, to create challenging and engaging level designs.

























