Question

Is it possible to make propulsion gel like in Portal 2? Or Repulsion Gel?

Answer 1

This is a real question. Not spam.

Answer 2

No, those gels are not physically possible.
The reason why they are not possible is because they give you kinetic energy, without taking the energy from somewhere else. Basically they are creating something out of nothing, which can not be done.
"Energy can be neither created nor be destroyed" Conservation of energy.

Answer 3

Thank you so much! Have a great day!