GET YOUR BEARINGS
About Costume Quest
Costume Quest is a Halloween‑themed adventure from Double Fine Productions where you pick a hero and explore three distinct environments filled with the studio’s humor. The single‑player experience blends light role‑playing, quest completion, party building, and costume collection that let you transform for combat.
The Grubbins on Ice DLC, included free for the PC version, adds new enemies, quests, costumes, battle stamps and treat cards. Its story follows monsters attempting to overthrow Araxia to bring peace back to Repugia, extending the base adventure.
01 / THE GUIDE
Story and Setting
The base game follows a Halloween adventure across three beautiful environments, each populated with Double Fine humor and a plot centered on confronting the evil Repugians. Progress is driven by completing quests that advance the narrative.
The Grubbins on Ice DLC continues the tale, introducing a conflict where monsters seek to overthrow Araxia to bring peace back to Repugia, adding new quests that expand the story.
- Compare the tone of base‑game quests with DLC quests to notice narrative shifts.
- Observe how each environment’s visual style reinforces the Halloween theme.
02 / THE GUIDE
Costumes and Transformation
Collecting costumes is a core activity; each costume lets you transform into a champion whose abilities differ from your base hero, directly affecting combat encounters with Repugians and DLC enemies.
The DLC adds additional costumes, broadening the pool of possible champions and providing new transformation options for battles.
- Try several costumes to see how each champion’s abilities change fight outcomes.
- Keep track of DLC costumes to expand strategic options.

03 / THE GUIDE
Party Building
Throughout quests you can build your party that tackles the varied challenges presented by the Repugians and DLC foes. A balanced party improves success across different enemy types.
As you acquire new costumes and characters, you may rearrange party composition, allowing you to adapt strategies for each environment.
- Mix characters with differing costume abilities to cover multiple combat scenarios.
- Re‑visit earlier quests after strengthening your party to uncover additional dialogue.
04 / THE GUIDE
Grubbins on Ice DLC
The free Grubbins on Ice DLC for PC introduces new enemies, quests, costumes, battle stamps and treat cards, extending the base game's content without an extra purchase.
A narrative focus of the DLC is helping monsters overthrow Araxia, a plot point that aims to restore peace to Repugia.
- Explore the DLC’s new quests to discover story details not present in the base game.
- Experiment with battle stamps to see how they alter combat tactics.
05 / THE GUIDE
Platform and Features
Costume Quest runs on Windows, macOS and Linux and offers single‑player play, Steam Achievements, Trading Cards, Partial Controller Support, Steam Cloud and Family Sharing, as listed features for the game.
Partial Controller Support indicates some controller functionality, while Steam Cloud is listed among the game's features.
- Enable Steam Cloud if you wish to keep progress saved to the Steam service.
- Test the controller option to see whether it improves navigation for you.





COMMUNITY
Player discussion