This paper describes the experimental analysis to evaluate business game learners’ understandings. For the purpose, we have carried out intensive experiments to record and analyze what learners have understood from business gaming practice. We utilize (1) the methods of recording decisions of each round and visual screens referred during the games, (2) protocol analysis of the utterance of players, and (3) performance sheet, or paper testing, to extract learners' understanding levels. The main results are that for players, player teams, and a game designer, the proposed method is applicable to business training games with computer-support.
