As mentioned in the other description, I'm hosting the source code for Mushroom Kingdom Fusion and Mario Fusion Revival now, since both have ceased development:
Mushroom Kingdom Fusion and Super Mario Fusion Revival sources publicly released – Fusion Gameworks
Here's Mushroom Kingdom Fusion's source, which lets you continue development on the game shown here:
Mushroom Kingdom Fusion and Super Mario Fusion Revival sources publicly released – Fusion Gameworks
Here's Mushroom Kingdom Fusion's source, which lets you continue development on the game shown here: