In this paper, we share about specific tenets of joy in mathematics and conditions for supporting joy. A pair of students, Julia and Javier, young Latinx mathematicians in Grades 3 and 4 respectively, participated in a study that involved addition and subtraction with negative integers within game play. Drawing on descriptions of joy and supporting joy, we describe specific instances of joy from Julia and Javier and the conditions that supported their joy. Julia and Javier's joy with mathematics above grade level provides a story of empowerment that counters a narrative that they are in an afterschool program where students are not meeting grade level expectations. Further, this qualitative analysis provides explicit instances of joy in mathematics and the conditions supported in a structured mathematical game, which is useful to both teachers and researchers. [For the complete proceedings, see ED658295.]