M4 engine lands ScummVM master.
This engine is used by two games, Orion Burger and Riddle of Master Lu. So far, only Orion Burger is completable. It is our second attempt to bring the engine, the first one started in 2008, and in 2011, we removed the engine because it hit a dead end in its development.
The engine has all of its logic hard-coded, e.g., every aspect, every actor, and every object has relevant code in C++. This is why it took so much effort from DreamMaster. And the resulting engine is almost 75k lines of code, supporting only one game so far.