About
SuperTux is an open-source 2D platform ("jump'n'run") game, referenced in this project's own README as the game it reimplements. Tux Builder is a from-scratch reimplementation of the platformer SuperTux, built in the Godot engine, and reuses or modifies some of SuperTux's original art, sound, and music assets. Running it from source requires Godot 3.2.
How it differs from the original
It's a full engine rewrite in Godot rather than a copy of SuperTux's original code, though it still carries over some of SuperTux's original art, sound, and music assets rather than replacing them with new ones.
Getting started
To run it, install Godot 3.2, download and unzip the project's source code, and open the project in the Godot editor.
History
The project has been succeeded by SuperTux Classic, a separate, more fully featured, robust, and bug-free reimplementation of SuperTux also built in Godot by the same author.