The digital game group received the standard 4-week course of rehabilitation but with an additional 30-min interactive digital game training session per week.

The standard rehab group received the standard 4-week course of rehabilitation delivered in one 30-min session per week.

Subjects received 30-min interactive digital game training session per week. The game system contain 7 skills training, each of which was named according to the corresponding TVPS-3.

TVPS-3 is a standardized and norm-referenced task for children age 4-13 years that uses a response format suitable for all children, including those with disabilities. It includes subtasks of visual discrimination, visual memory, visual-spatial relationships, form constancy, visual sequential memory, figure ground, and visual closure (Martin et al., 2006). Each of the seven subtests has 16 items of varying difficulty. Therefore, the test has 112 total questions.

The 20-item questionnaire content was divided into five themes: perceived ease of use (6 questions), perceived usefulness (4 questions), perceived joyfulness (4 questions), satisfaction (3 questions), and continued use (3 questions). Questionnaire items were answered on a Likert scale from 1 (completely disagree) to 5 (completely agree).

The digital game test had 7 subtests, and each subtest had 10 questions. Based on the seven-item rules of TVPS-3, 1 point was assigned to each question, for a score of 10 points for each subtest, and a total score of 70.