Play Hollow Knight as Super Mario Bros. Mario, with his exact NES moves.
- Mario replaces the Knight. He uses Super Mario Bros. Remastered's classic physics: walk, run (hold Attack, like B), skid, and jumps that go higher the faster you run.
- Mario rules. You start Small. A Super Mushroom makes you Big, a Fire Flower makes you Fire Mario, and a hit shrinks you back down. No masks: Small Mario dies in one hit, just like in SMB.
- Stomp everything. Land on Hallownest's bugs to squash them, and hold Jump to bounce higher. Fire Mario throws bouncing fireballs with the same B button you hold to run.
- ? blocks and bricks in every room. Bonk them from below for Geo coins and power-ups. Big Mario smashes bricks.
- Super Star. Catch the bouncing Starman for 12 seconds of rainbow invincibility with the Starman theme, and knock out everything you touch.
- Smash Hallownest the Mario way. Press B next to it: Big Mario breaks the breakable walls and floors like bricks, and any Mario smashes Geo rocks for their Geo, breaks pots and statues, and bumps levers.
- Goombas, Koopa Troopas and Piranha Plants wander in among Hallownest's own enemies. Kick a Koopa's shell into a crowd of bugs.
- Dirtmouth gets SMB's Overworld colours and the depths get the Underground ones. Every jump, stomp, coin and power-up uses SMB's own sound effects.
- Every Hollow Knight ability you earn still works: dash, wall jump, double jump and spells.
Solo. Needs Hollow Knight (current Steam version) and your own Super Mario Bros. (NES) ROM, which Melty finds on your PC. Mario's pictures are cut from your ROM the way Super Mario Bros. Remastered does it, so nothing from Nintendo ships with the mod.
Credits: Super Mario Bros. by Nintendo (from your ROM) · physics, sprite layouts, sound effects and Starman music from Super Mario Bros. Remastered by JHDev2006 and contributors (GPL-3.0) · Hollow Knight by Team Cherry · BepInEx 5 / HarmonyX (MIT).