Start With the Demo's Reported Controller Inputs
Underkeep controller controls have a few useful documented starting points: an April demo player reported strafing with the left stick, selecting characters with left/right movement of the right stick, and using B to pick up items. Treat these as that player's demo experience, not a complete verified mapping for every controller or later build.
The official Underkeep website advertises full controller support. That confirms the intended input method, but the detailed button examples here come from community feedback rather than an official control chart.
Use the Partial Layout Without Inventing the Missing Buttons
The most useful inputs from the April Demo Feedback thread are:
| Input reported by the player | Demo behavior described |
|---|---|
| Left stick | Strafing |
| Right stick, left/right | Selecting party characters |
| B | Item pickup, added as a correction to the player's initial question |
The player specifically said right-stick character selection worked left/right rather than up/down. If you are having trouble selecting a party member, that is a useful behavior to check against the prompts in your version.
The same feedback mentions skip and rest on shoulder buttons without establishing a precise left/right assignment. It is not enough to build a complete shoulder-button table.
Check Context When A and X Behave Differently
The player's report describes frustration with interactions involving A and X, saying the expected button varied with context. It also contains a correction about B for pickup. Those details should not be flattened into a universal statement that one button performs every interaction.
Read the current prompt and distinguish selecting a character, interacting with the world, and picking up an item. If a nearby-looking item cannot be collected, the same player reported needing to move onto its square. That is a demo observation, so check the behavior in your version rather than assuming the game always allows pickup from an adjacent square.
In March developer replies, fully customizable gamepad controls were a plan prompted by demo feedback. That is useful context if the default layout feels awkward, but it is not proof that remapping had already shipped in the public demo.
FAQ
How did the demo player select characters with a controller?
The report says to move the right stick left or right. The player specifically noted that up/down did not work for this selection in their demo experience.
Which button picked up items?
The player corrected their initial question to identify B. Because the thread also discusses context-dependent interaction buttons, check the on-screen prompt in your current build.
Can I remap the controller layout?
The developer said fully customizable gamepad controls were planned. The cited discussion does not establish that the remapping feature was already available in the demo.