Game-based learning in science education is an effective method to enhance students' motivation, active participation, and conceptual understanding of the scientific knowledge. This study aimed to encourage teachers to develop and use game-based activities related to the concepts of light and sound and to present students' views about the games developed in the study. The game-based activities were implemented in the 2016-2017 academic year with 27 sixth-grade students. The study reports on the design and implementation processes of 6 games about the light and sound unit. The students evaluated the games by answering 6 open-ended questions. Students' responses were analyzed using the content analysis method, and the findings are shared. The findings showed that the game-based activities facilitated students' learning and created an enjoyable learning environment. Time management is an aspect that should be paid attention to during the games. Teachers are recommended to include games in their lessons.