The Bop-It-Inventor is a reproduction of the Bop-It game by Hasbro. You can compete against each other in a group. After each round the score is displayed. The speed increases the higher your score climbs. Speed and rate of acceleration is configurable.
Bop-It-Inventor can be built with just the parts in the 51515 Mindstorms Inventor set. You do not need any additional parts besides a PC, tablet, or phone to upload the program.
The instructions on rebrickable.com include Building instructions, programming guide, WordBlock program with full explanation and comments. The ready-to-use program is provided as an .lms file for use in the regular Mindstorms APP. All documents are availble in English and German.

More Details on the page about the book The Mindstorms Robot Inventor Expert