[raytopia]

The engine [0] that was used for Toontown is still around and is open source. Uses both C++ and Python.

[0] https://www.panda3d.org/

[tyteen4a03]

The game itself is also still around!

Two major flavours:

- Toontown Rewritten, quite close to the original game with QoL features

- Toontown: Corporate Clash (I volunteer there) has brand new mechanics and various QoL to bring it more to a modern MMO's standards