Incredimazing! 
iMapBooks combine eBooks with computer games, using the best aspects of computer games:
interactivity, challenge, accountability, motivation, and socially friendly learning
Readers of iMapBooks had:
increased retention of spatial details of stories
even those not explicitly addressed by interactive activities (study with 5th graders)
increased learning of new vocabulary (study with Chinese college-age English Foreign Language learners).
In The Netherlands it is used in a study for reading comprehension.
72% of fifth graders said it was:
fun, cool, great, indcredimazing!
Some typical comments included:
"Made reading more fun for me."
"It made us use our brains."
interactivity, challenge, accountability, motivation, and socially friendly learning
Readers of iMapBooks had:
increased retention of spatial details of stories
even those not explicitly addressed by interactive activities (study with 5th graders)
increased learning of new vocabulary (study with Chinese college-age English Foreign Language learners).
In The Netherlands it is used in a study for reading comprehension.
72% of fifth graders said it was:
fun, cool, great, indcredimazing!
Some typical comments included:
"Made reading more fun for me."
"It made us use our brains."