Astroneer’s environment itself is incredibly captivating and alluring. With its bright graphics and otherworldly landscapes, I was tempted to jump straight in and run towards every colourful plant in sight. There is a lot to see; aside from fauna and flora there are plenty of passageways, caves, and pieces of debris left by other Astroneers that beg to be explored. However, while oxygen is unlimited near your shelter, you’ll quickly run out of oxygen once you stray too far away from your home base. Once you’re disconnected from your shelter’s air supply, a blue bar on your backpack keeps ticking backwards until finally, you suffocate. It didn’t take long for me to suffocate many, many times.
To remedy this, you’ll have to build tethers to connect to an oxygen generator. By dropping a tether every ten steps or so and connecting them, you can create oxygen supply lines. These cables not only provide you with oxygen, they also provide a source of light when exploring dark environments. It only took a few hours of playtime for me to have a sprawling network of oxygen supply lines lighting up the landscape. As I created more and more oxygen lines, I was able to explore more challenging underground spaces and collect rarer materials.