Design and Usability Evaluation of a Portable VR Serious Game for Adolescent Social Anxiety. - Timothy J. Pattiasina; Harits Ar Rosyid; Anik Nur Handayani; Hartarto Junaedi; Edwin Meinardi Trianto; Raymond Sutjiadi; I Gede Wiarta Sena; David S. O. Soedargo (J. Inf. Technol. Educ. Innov. Pract., 2026)