The Powder Toy

Existing liquids — particularly DEUT — should be able to accomplish this, if used cleverly enough. I've sketched a proof of concept here: https://powdertoy.co.uk/Browse/View.html?ID=...

I didn't think that TPT lend itself to speedbuilds?  I usually build stuff over the course of a long time– first making a save as proof of concept, going back and making it functional...

simulate the demographics of a population

The living room is about 6x8 meters long and wide, and is rather dark (you would turn on the light, but there is no lightbulb). It has seemingly been raided, and all that is left is a green couch. Yo...

Even older:   #include <stdio.h>

Out of curiosity, how are infinite loops even detected?  Don't tell me jacob1 solved the halting problem

Perhaps the window could be split up into two or three or four different strips next to each other? Like [ | | | ], each with its own thread. The borders of the sections would be rather glitchy, but ...

Jacob1's mod is probably the best (completely a matter of opinion, though)- it keeps pace with and is probably ahead in development of the game, has a bunch of cool features, and feedback is eas...

    Satellites detect seemingly new oil reserves across the planet, and the total amount of detected oil multiplies by at least five within a month. Most of this oil is in the ocean, and ...

Both of these ideas won't work. Solid plutonium- there are no solids that act as one. This would require a complete recoding. Time acceleration- You can do tpt.setfpscap(600) if you have a reall...