Most likely, the name for your child will not be appreciated by your girlfriend or wife if you named it after a video game. Instead, you should think about the names that you like and have meaning. Some people will name their kids after a relative in the family like a mother or father. Naming a child after something like a video game might upset people in the family.
Also, a child’s name is a permanent thing and even though you may love the video game right now, later you may have other interests and then the child’s name won’t seem important. A child’s name should be thought through extensively and given consideration to what your partner wants to name the child too.