Dr. Joke Torbeyns is a professor at KU Leuven's Center for Instructional Psychology and Technology. Prof. Dr. Erno Lehtinen is a professor at the University of Turku. Prof. Dr. Jan Elen is a professor in KU Leuven's Educational Sciences department.

• Part 1: Game descriptions.- Chapter 1 Design of the game “Dudeman & Sidegirl: Operation clean world”, a numerical magnitude processing training.- Chapter 2 Description of the educational math game ‘Monkey Tales: the museum of Anything’.- Chapter 3 Number Navigation Game (NNG): Design principles and game description.- Chapter 4 ‘Zeldenrust’: a mathematical game-based learning environment for prevocational students.- Chapter 5 Applying motivation theory to the design of game-based learning environments.- Chapter 6 DIESEL-X: A game-based tool for early risk detection of dyslexia in preschoolers.- Part 2: Empirical studies on serious games.- Chapter 7 Performance in educational math games: Is it a question of math knowledge?.- Chapter 8 Integration in the curriculum as a factor in math-game effectiveness.- Chapter 9 Developing adaptive number knowledge with the Number Navigation game-based learning environment.- Chapter 10 Number Navigation Game experience and motivational effects.- Chapter 11 The role of curiosity-triggering events in game-based learning for mathematics.- Chapter 12 Evaluating game-based learning environments for enhancing motivation in mathematics.- Chapter 13 Formal and informal learning environments: Using games to support early numeracy.- Index.