Just like its predecessor, SteamWorld Dig 2 revolves around mining. The main character of the game is Dorothy, a steam-driven robot who also appeared in SteamWorld Dig as an ally. Like Rusty, the protagonist of SteamWorld Dig, Dorothy uses a pickaxe to create paths through an underground world by mining cubes of ground away. Besides mining resources and orbs, players will also fight enemy creatures that come on their path. Compared to its predecessor, SteamWorld Dig 2 features an increased focus on platform elements and a Metroidvania-style underground world.
The game follows Dorothy in her search for Rusty after he disappeared in the end of the first game. The story connects the events from the original SteamWorld Dig and SteamWorld Heist.
The game released to positive reviews, currently sitting at an 88 metascore on Metacritic. Many critics have praised its improvements upon the original, as well as its world and gameplay.
It was initially released on 21 September 2017 for Nintendo Switch in the Nintendo eShop. It is also released on Steam for Microsoft Windows, macOS, and Linux, and in the PlayStation Store for PlayStation 4, and PlayStation Vita.