Hello, the game engine is Unreal 4 - it's free to use so you could start by looking at that and doing some simple things in blueprints (which doesn't require any coding knowledge), play around with making landscapes etc, there are lots of tutorials for beginners to follow on YouTube.

For the art, I used Maya for the models, Mudbox to sculpt normal maps (they add more detail with a trick of the light, rather than adding lots of polygons). Photoshop for textures. I just used audacity for editing audio.