We came across this article and found the research paper online. Students who played this video game outperformed classmates who didn't play by 20% in a test of main concepts.
Computer animations may be an ideal format for conveying multistepped and complicated spatial processes. The opportunity for multiple replays and visualization from different perspectives may make the difference for understanding. "For these students, learning science through exploratory activities was uncommon..."
Good computer-based programs may strike a balance between the didactic and exploratory learning. With didactic only, the student does not experience what it is like to be a scientist - and discovery. With exploratory only, students may run the danger of never discovering or drawing the wrong conclusions (the real practice of lab bench science).
The article is an honest article, and it discusses the problems as well as the promise.
Xbox Solution - Video Games Said to be Effective Learning and Teaching Tools by MIT