I started and when a grasped the concept I immediately closed the page and walked away haha. I foresaw myself spending hours and hours trying to finish this game. It is like 2048 but harder.
Looks very similar to JEDI [0], an early Delphi VCS system that worked that way. It gave us the tranquility to know that no conflict would appear, as only one developer could work with a locked/checked out file at a time. There was no merge those days. In contrast, files that were frequently changed in every task would always cause a blocking between developers.