This is a free and open source game engine and toolkit, that allows to create games of platform genre. The basic idea of this project is to make it possible for every user to create platformers with existing or self-drawn sprites. The first work on project began since December 2013, and the project was founded in a March of 2014. The project is formerly known as PGE Project (a.k.a. Platform Game Engine Project).

TheXTech is a free and open-source game engine for Mario-like platforming games. There is a complete and extended source code port of the Super Mario Bros. X 1.3 game engine (later just "SMBX"), and its direct unofficial continuation after development halted in the 2011th year. This engine preserves full compatibility with levels and episodes made for the original SMBX game, including its repacks. And it's allowed to create brand-new Levels, Episodes, and content packs. Unlike the original SMBX game that depends on Windows and x86, TheXTech can work on many operating systems (including Linux distros, macOS, xBSD, Android, Haiku, etc.) and processor architectures (including x86_64, ARM, PowerPC, MIPS, etc.).