What are the best exploration based games on PS4?

There are a bunch of companions to find in the game, starting with Dogmeat, the dog. Each companion has their own skills that can help you. For example, Dogmeat can dig up hidden items and bring them to you. They can also distract the enemy, causing the combat to be a little easier since all the attention won't be on just you. The only real downside is that you can only use one companion at a time, but you can easily swap them out. Using a companion is not mandatory either, so if you prefer the added challenge you can travel without a companion.