This research aims to: 1) develop media to promote learning about stars and planets with the Roblox game 2) evaluate user satisfaction with learning media about stars and planets with the Roblox game and 3) to compare learning achievements. Before and after learning through learning media. The media presents information about stars and planets. The Roblox platform is used to create educational games that enable students to learn and answer questions within the game. Learners gain knowledge while having fun. The testing of learning media about stars and planets using the Roblox game involved two sample groups. The first sample group, consisting of 5 individuals, was utilized to assess the effectiveness of the media, employing specific targeted methods. The second sample group, comprising 40 individuals, was used to evaluate user satisfaction with the media, employing a simple random sampling method. Research tools included a performance evaluation form and a satisfaction questionnaire. Statistical analysis utilized mean and standard deviation.
      The research results found that: 1) The media promotes learning about stars and planets through the Roblox game, which features a 3D display and presents interesting content. The game is easy to use, suitable for children, and incorporates information about stars and planets. 2) The performance evaluation by experts indicated that the overall efficiency was at a very appropriate level, with a mean of 4.44 and a standard deviation of 0.76. User satisfaction was at a high level overall, with a mean of 4.43 and a standard deviation of 0.67 and 3) the comparison of learning achievement. before and after learning management through learning media of the target group on the media, it was found that the learning outcomes of the learners after learning were higher than before learning. The mean score of pre-learners was 5.93 and the standard deviation was 1.21, and the mean score of the post-learners was 10.28 and the standard deviation was 1.15. Therefore, it can be confidently stated that the developed media can be effectively used to promote learning.