I am coming up with a concept for a Transformers story. Transformers are aliens and have not made contact with humans yet. While some things, such as having eyes, being bipedal, etc. are necessary for human connection, it is hard for me to imagine new things.
That is confusing so for example I don't just want to have transformers play soccer but like... space. I would want to create an entirely new sport different from what we have on Earth- not based on baseball or basketball or whatever. However, I don't even think my brain can come up with something like that. It's like making up a new colour.
Another example, coming up with alien animals. How do you come up with something that's not just a mixture of a cat and a dog?
Please let me know your honest thoughts. I'm not asking you to come up with anything for me, just if I just lack enough imagination or some pointers.