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TheXTech v1.7.4.2-hotfix by TheXTech

Released Oct 25, 2026 · Games
25,622 downloads on GitHub · Source code

The Super Mario Bros. X 1.3 engine, rewritten in C++ from Visual Basic 6

Games.zip

Install on your 3DS

QR code of the download link for thextech-3ds-v1.7.4.2.zip

Method 1Scan the QR code
With 3dsDL (Scan QR Code). Then open the .zip in 3dsDL's Files and extract it where the release notes say.

Method 2Send it to your 3DS
Open 3dsDL › Receive on the same Wi-Fi, then press:
Send to 3dsDL
Then extract the .zip in 3dsDL's Files where the release notes say.

Other ways to install

Files

FileSizeSHA-256
thextech-3ds-v1.7.4.2.zip4.0 MB 3f5942b0…0188 Download

Downloads come from the developer's GitHub release while it's there. If GitHub stops serving a file, or the file there changes, the same link serves our copy.

All versions (15)

Screenshots

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About TheXTech

It plays SMBX 1.3 levels and episodes the way the old game did, minus the editor, and keeps many of its logic bugs on purpose. Bugs that crashed or froze the game have been fixed. Wohlstand did the conversion from the original VB6 code, keeping as close to it as possible.

Episodes that use LunaDLL Autocode run through LunaScript, built in since version 1.3.6. LunaLua doesn't work, so SMBX2 content won't run.

Release notes

v1.7.4.2-hotfix · TheXTech v1.7.4.2: A hotfix for 3DS and Wii · Oct 25, 2026

After the previous releases v1.7.4 and v1.7.4.1, the critical bug was discovered on 3DS and Wii platforms that makes some effects being invisible. The suitable builds were been replaced at the previous v1.7.4.1's page as other platforms weren't affected by this problem.

This post contains Nintendo 3DS and Nintendo Wii only builds, for other platforms, you can download packages at the main post here. Also, all the binaries had been updated at the main post to prevent users downloading faulty builds without knowlege of that.

Hotfix changelog for 1.7.4.2

  • 3DS / Wii: fix TheXTech 1.7.4.1 bug where NPC death effects would not display incorrectly. (@ds-sloth, thanks to @Wohlstand for the report)

Full changelog

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