Table 7 Limitations of included studies

Sample size was limited

[30, 32, 43, 45, 51, 53, 55, 56, 59,60,61,62, 64, 65]

Short-term therapy

[30, 32, 43, 47, 51, 55, 60,61,62, 65]

Short-term follow-up

[30, 51, 53, 55, 60,61,62]

Cultural differences and the family environment

[43, 58]

Heterogenous populations

[22, 54]

Lack of control group

[51, 56, 65]

Double-blind design is need

[60]

The lack of more precise and external evaluation of improvements

[51]

Heterogenous populations

[45, 66]

Not blinding assessors

[55]

Double-blind design is need

[32]

Psychotropic medication using

[22]

Study the gender differences

[51]

Limited in developmental profiles, abilities, and difficulties

[45]

Duplication of game objects

[44]

Sensitivity of game pages and children reaction

[44]

Limited generalizability to the wider autism spectrum

[45]

Insert the game in routine program

[47]

Not to randomize experimental treatment

[64]