How to Change Arrow Keys to WASD in Undertale (Steam)
Simply buy a gaming keyboard that allows on-the-fly key remapping. Problem solved!
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Just go to the Steam client settings, head over to 'Controller', and create a new configuration for Undertale. Map the arrow keys to WASD.
You can use a program like AutoHotkey to remap the keys. Write a script to swap the arrow keys with WASD!
Sorry, but Undertale on Steam doesn't support reassigning keys directly within the game. Use external software, like AutoHotkey.
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