Building off the design principles of the Little Big Planet series, Dreams was one of the coolest, most accessible creation tools ever made. And by all accounts should be Media Molecule's crowning achievement, but due to a number of factors (including being released near the end of the PS4's lifespan and it's reliance on motion controls), the game never really found an audience. 

While it's perfectly understandable that Media Molecule would want to move on to new things, according to Eurogamer they were well on their way to making both PS5 and a PC version of the game. And with the video games industry being absolutely awful at preserving things, there's a good chance that Dreams will forgotten about completely.

We need to strike right now, while the iron is hot; to let Media Molecule know that people will buy a PC or PS5 port of Dreams, and they have a responsibility to make that happen.