The aim of this research is to analyze gamification between MindSnacks and Duolingo for their difference in course structures. A mathematical model of game refinement theory has been used to quantify the attractiveness. In this study, we have figured out some interpretation and derivation of both game progress models that result in the difference in the value of game refinement (GR-value). The differences in the number of milestones in both learning sets show an interpretation to GR-values in the aspect of learning achievement. The research is restricted as it only considers MindSnacks and Duolingo in language learning platform category. The study acknowledges the need for additional research on gamification in the serious environment and provides the practical implications on how to foresee the future of gamification in education domain. © 2018 Pushpa Publishing House, Allahabad, India.