The model, called GameNGen, was made by Dani Valevski at Google Research and his colleagues, who declined to speak to New Scientist. According to their paper on the research, the AI can be played for up to 20 seconds while retaining all the features of the original, such as scores, ammunition levels and map layouts. Players can attack enemies, open doors and interact with the environment as usual.
After this period, the model begins to run out of memory and the illusion falls apart.
It’s a proof of concept demonstration not a final product. You might as well say the Wright brothers didn’t have anything other than their party trick.
So many practical applications for being able to do this beyond just video games in fact video games are probably the least useful application for this technology.