The "Selene: A Lunar Construction GaME" instructional video game is a robust research environment (institutional review board approved) for investigating learning, affect, and the CyGaMEs Metaphorics approach to instructional video game design, embedded assessment, and informatics analysis and reporting. CyGaMEs applies analogical reasoning theory to translate fundamental scientific phenomena into embodied, procedural, goal-driven, instructional gameplay and concurrent metrics of learning. "Selene" also collects integrated measures of affect operationalized as flow dimensions skill and challenge. "Selene" is a free, online Flash/Flex game available 24/7 to registered players. The player (age[subscript mean]?=?13; N?=?3882; n[subscript female]?=?1915; n[subscript male]?=?1908; n[subscript Spanish-language version]?=?157) dataset, collected between April 6, 2010 and May 30, 2014, is anonymized, open and downloadable within Wheeling Jesuit University's data repository. Dataset files contain timestamped, tab-delimited, player log data for gesture-level gameplay; Timed Report progress toward each game/learning goal; flow dimensions; non-gameplay assessments; demographics; paradata; and repository lexicons. Dataset analyses using traditional statistical methods (e.g., multilevel modeling, interrupted time-series) study learning trajectories, learning moments, affect (flow dimensions), persistence, gender differences, dashboard effects and the interactions among them. CyGaMEs "Selene" translates Timed Reports into real-time, online dashboard report visualizations players and their registered educators can understand and use.