In Super Mario Maker, a crucial feature is the requirement that creators must complete their own courses before they can upload them to the online server. This built-in mechanism is designed to ensure that all submitted levels are at least theoretically beatable, thus preventing the proliferation of truly impossible courses. Without this step, a course would remain unlisted and unavailable for others to attempt.

However, some players have identified methods or glitches that allow the submission of courses that are impractically difficult or that may seem impossible at first glance. Particularly in Super Mario Maker 2, reports have surfaced of creators leveraging these unintended exploits to bypass the typical clear requirement. While such submissions exist, they are notably exceptions rather than the rule and are at risk of removal by Nintendo.

It’s also important to note that Nintendo actively maintains the integrity of its game environment by monitoring the performance of uploaded courses. If a course consistently receives low star ratings or has a minimal play count, it is likely to be removed from the servers over time. This system of automatic deletion also applies to levels identified as containing bugs or inappropriate content. Therefore, even if a near-impossible level is uploaded, it could still be deleted if it fails to engage players or if it is deemed problematic.

In conclusion, while the majority of courses in Super Mario Maker adhere to a clear and fair standard due to the creator clear requirement, there are isolated cases where glitches have allowed for the upload of nearly impossible levels. Nevertheless, these courses face a significant risk of deletion due to low player interaction or compliance issues, ensuring the overall quality and playability of the online course catalog remains high.

Key Points:
– Creators must clear their courses to upload, preventing truly impossible levels.
– Glitches may allow impossible courses to be submitted, but these are exceptions.
– Nintendo deletes courses with low ratings or inappropriate content, adversely affecting difficult levels.