Downpour

Rain World: Downpour is a paid DLC released for PC on Jan 19th 2023. Initially developed as the More Slugcats Mod by the community, it was brought on as official content when Akupara Games became Videocult's publisher, after Adult Swim. Downpour also incorporates several other community-made projects, including Jolly Co-op, Expedition, and Rain World Remix, a free update to the vanilla game adding accessibility and quality of life options.

=Slugcats=

=Regions=

=Creatures=

=Objects=

=Expedition Mode= Main Article: Expedition

In this mode you can select your favorite slugcat, after unlocking them through campaign completion, and go into expeditions with specific objectives to complete. Each slugcat's expedition is tailored to their campaign with the only difference being the removal of story elements.

An expedition can be customized to certain objectives which have respective point values that will increase your level. Increasing your level and completing various pre-made objectives such as quests, missions, and milestones, will unlock perks, burdens, and jukebox music which can be used for future expeditions. Quests can be completed by tailoring ones expedition to meet certain requirements. Mission expeditions however cannot be changed which are pre-made expeditions requiring specific slugcats, perks, burdens, and objectives to be completed. Milestones are another aspect of expeditions which keep track of overall completion in all areas.

Various gameplay changes are made in expedition mode.
 * Players start in a random shelter.
 * All characters start with two karma and have a max of five, dying with one karma results in failure.
 * Passages are disabled by default and instead is replaced with a perk.
 * Echoes do not spawn on the first cycle.
 * does not have a cycle limit.
 * Lore and arena tokens are not collectable.

=Safari Mode= Main Article: Safari

In each region of the game players can find a red unlock token, which unlocks that region for Safari mode. In this mode the player controls a gray Overseer while observing the different creatures. The player can control individual creatures to create unique situations and experiment with how they interact.

In the menu for this game mode players can select which region they want to use (karma gates do not work), and deactivate the rain so there is no time limit.

Creature Control

Selecting a creature while controlling the Overseer and then pressing space allows the player to take control of it. Pressing Jump moves the Overseer's selection to a random creature in the region, making it faster to find an interesting one to control rather than going from room to room. Pausing the game shows how to control that creature, as each has different abilities not available to the Slugcats, like biting, charging, pointing, etc. If the creature the player is controlling dies, they will return to playing as an Overseer.

= Challenge Mode = Main Article: Challenges

In this mode, The player can choose from 70 unique challenges to attempt to complete, with each one having specific enemy spawns and occasionally unique maps exclusive to the challenge. Most challenges have pre-set win conditions (e.g. killing all creatures or gaining a certain amount of points) and are usually completed by hibernating after said conditions are completed. Each slugcat has 7 unique challenges specific to them that usually explore or test the specific abilities of that slugcat. These challenges are unlocked by completing the campaign of the slugcat they are centred around.

= Jolly Co-op = This mode allows you to play through any of the vanilla Slugcat campaigns with up to 4 players, each using any (unlocked) Slugcat, including the Downpour roster.