The purpose of this research is to examine the influence of a special education program, incorporating online digital games, on the understanding of basic mathematical concepts by students with mild intellectual disabilities. The research involved four students (one girl and three boys) with mild intellectual disabilities divided into two groups, an experimental (combined intervention) and a control group (standard intervention). The students' performance was assessed before the intervention program, immediately after the end of the program and two weeks after the completion of the intervention. Based on the results, improved performance was observed in the experimental group's students, in the areas of intervention, in relation to the students in the control group. The experimental group's students continued to perform at high standards, contrary to those of the control group. The findings show that the teaching approach integrating online digital games has a positive impact on the understanding of basic mathematical concepts by students with mild intellectual disabilities.