LEARNING LIMITS: Texas education gaming company Triseum has launched a game focusing on calculus. Variant: Limits was announced at the EDUCAUSE conference this week, and the game aims to take students through tough calculus topics through an immersive 3D world. Players interact with objects and obstacles throughout the game by applying calculus principles and theories, like limit laws and the intermediate value theorem. Triseum, founded through a lab at Texas A&M University, will release several more games as a part of this new series.