Spelunky 2

I have discovered a crab that cuts off its own eyes. It was a small moment in the warm waters of Subnautica 2, but it reminded me why I loved the first game so much. This crab has regenerating eyestalks that mimic the anemones of the seabed. "If the stalks grow too long," says a lore blurb about the critter, "the clowncrab will trim them to avoid drawing attention." Every animal has a note like this, earned when you scan them - a growing encyclopedia the player is encouraged to build to help discover the world around them. 

In a fluffy way, every game is about discovery - you are finding out the rules of a world as you go along. In a non-fluffy way, some games are shit at this, and others are masterful. Inspired by a single crab, I've spoken to a handful of devs on this topic. How do the makers of Spelunky, Mina The Hollower, Citizen Sleeper, and Moves Of The Diamond Hand make sure their worlds are worth discovering? And do I reckon Subnautica 2 has hit the mark?

"The best thing a game can do to create a