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On December 22nd, 2017, Maurice stated that he removed all 3DS-related code, since Love Potion was not yet feature-rich enough to support it. The next day, Maurice streamed "Secret Mari0 2 development", attempting to code pixel-based physics into the game. He commented that he should just make the rewrite based off SMB3 instead at that point, and later requested sprites of Mario with a portal gun in the SMB3 style. On October 4th, 2017, Maurice reworked portals with the ability to be sloped. Since then, he has posted regular updates on the Discord server.
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In September 2017, Maurice started rewriting some of Mari0's 5-year-old code to be more optimized, and to run on 3DS. Although Turtle had previously attempted a 3DS port, it was was unsuccessful. Mari0 2 began as a project to port the game for TurtleP's Love Potion, which is a port of Löve to 3DS homebrew. It's a rewrite I started and then I made it not bad so now it supports angled portals in arbitrary positions, runs better, and other stuff.
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