Why is it necessary to learn Ruby?

Question

what does it actually do, can u create games with it

Answer 1

This is a good book on writing games in Ruby. (free)
https://leanpub.com/developing-games-with-ruby/read
Be aware, this should be just for fun, If you want to earn money by making large scale games Move to Java, C# or C++.
"Why is it necessary to learn Ruby?"
It's not necessary at all. You'll learn it if you like it.

Answer 2

Not the best for gaming... ;)
https://www.sololearn.com/discuss/511627/?ref=app