Abstract: Tools and techniques for non-linguistic interaction with computer systems via surface stimulation are provided. These tools may receive indications of stimulation levels calculated for cells defined by a non-linguistic user interface. The cells may be associated with respective physical regions of a hardware substrate. The stimulation levels may be calculated based on non-linguistic actions directed by users to the hardware substrate. Visible characteristics of the non-linguistic user interface may be updated in response to the calculated stimulation levels.