Since 4.0.1 was the final patch, Nintendo does not update this game anymore. However, save editing can still cause bugs.

Some community-reported codes work by entering button sequences or text strings in specific menus:

These codes are for offline use only. Nintendo Switch Online bans have been reported when cheating in online co-op or ranked Danger Room. Use at your own risk.

Last Updated: Post-4.0.1 Patch (The Fantastic Four: Shadow of Doom DLC)

Since its release on the Nintendo Switch, Marvel Ultimate Alliance 3: The Black Order has evolved dramatically. The final major patch, Update 4.0.1, (often referred to as the Fantastic Four DLC patch) added four new heroes, a new Gauntlet mode chapter, and rebalanced the end-game grind. However, as the game has matured, the community has shifted focus from grinding to dominating. Whether you are looking for legitimate in-game cheat codes, secret unlockables, or save-editing techniques, this guide covers everything you need to know about Marvel Ultimate Alliance 3 Update 4.0.1 Cheats.

Disclaimer: This article discusses save editing and third-party tools. Modifying your Switch or save data carries a risk of console bans from Nintendo Online Services. Proceed at your own risk.

Some players call these “soft cheats”:

This is the closest thing to actual cheating in MUA3. Because the Nintendo Switch saves game data to the internal memory, users with a homebrew-capable Switch (or an emulator like Ryujinx/Yuzu) can extract the save.dat file and modify it using specific editors floating around the modding community.

What you can change with a Save Editor (4.0.1 compatible):

Risks:
If you take a modded save online into the Danger Room or try to upload a leaderboard time for a Trial, you risk a console ban from Nintendo. This is strictly for offline players.

Legitimate Alternative: Download a "100% Complete" save file from communities like GBAtemp or Nexus Mods. These are user-shared files that have completed Update 4.0.1 legitimately so you can just play New Game Plus with everything unlocked.

Let’s get this out of the way immediately. Marvel Ultimate Alliance 3 does not have traditional button-cheat codes. You cannot pause the game and input "Up, Up, Down, Down, Left, Right, Left, Right, B, A" to unlock Doom. The developers, Team Ninja, built this game around online leaderboards for the Danger Room and Infinity Trials. Consequently, active "God Mode" or "Instant Win" commands do not exist natively.

However, "Cheats" in the context of Update 4.0.1 refer to three specific categories: Save Editing (external tools), Exploits (glitches), and Min-Maxing (legitimate game mechanics that break the economy).

Fix: This happens if you cheat-unlock Thanos (Infinite) without beating the story. Go to the Depot and re-equip the Thanos costume. The model will load.