Religion is not something that is discussed much when talking about videogames, even though many games often feature religious themes and stories based on religious texts. It's difficult to avoid these things, since religion has had such an enormous influence on all cultures, so of course we're going to see it making its way into videogames.
I've always appreciated seeing religious themes in games, even though I'm not religious myself. The folklore is very interesting to learn about, and it's not something I've spent a lot of my time reading up on by myself, so experiencing it in a videogame is about as close as I'm gonna get. Christianity in particular seems to be quite rare in videogames, but there are plenty of quality examples if you know where to look.
Here are a few specific examples of Christianity's influence in videogames: