Parallel universes where the cosmological constants are different to ours have been hypothesised. Most of these would presumably lead to a chaotic mess.
The observed values of the dimensionless parameters (such as the fine-structure constant) that govern the four forces of nature are finely balanced. A slight increase in the strong nuclear force would bind the dineutron and the diproton and all the Hydrogen in the early universe would have been converted to helium. There would be no water or the long-lived stable stars that are essential for the development of life. Similar relationships are evident in each of the four force strengths. If they are modified sufficiently the universe's structure and capacity for life is greatly affected.
Our universe seems to be an arbitrary balance between constants that happen to "work".
It Takes 26 Fundamental Constants To Give Us Our Universe, But They Still Don't Give Everything
A number of explorers have developed a way of jumping between such universes. I'm interested in their exploits under the various conditions, however, starting at zero ...
What would it be like if our explorers landed in an alternative universe containing absolutely nothing?
This universe has nothing in it except an infinite amount of empty space.
Would the explorers impose their own constants (such as gravitation)? Or would they explode or turn to nothing? Must we assume that there is any kind of energy in the space or could it be literally empty of all matter and energy?