Table 2.

Protocol for conducting playtests.

Actions	Considerations	Time (min)
Brief introduction of the dynamics of the session and interaction between the researcher and the user with stroke to obtain informed consent	—a	10
A quick explanation of how the VRb system works and what to expect from the activity	Preparation and arrangement	5
System implementation (HMDc, headphones, and controls)	—	—
Free play or natural interaction with the system	Manifestation of difficulties, in real time if necessary	5
Receive feedback or explore ideas while users play	Formulate the questions established for the session	10
Conclude the session with questions about the experience	Questions	10

^aNot available.

^bVR: virtual reality.

^cHMD: head-mounted display.