Techniques for improving a user video game experience are described. In an example, a computer system receives event data from a plurality of user devices. Each event data includes an identifier of an activity in a video game and data and an identifier of a mechanic used to complete the activity. The identifiers can be predefined in program code of the video game. The identifiers data can be received based on an execution of the program code. The event data is processed to determine, for a user that has not completed the activity, a readiness of the user to perform the activity. Depending on the readiness, the activity can be suggested in a user interface element.

Techniques for improving a user video game experience are described. In an example, a computer system receives event data from a plurality of user devices. Each event data includes an identifier of an activity in a video game and data and an identifier of a mechanic used to complete the activity. The identifiers can be predefined in program code of the video game. The identifiers data can be received based on an execution of the program code. The event data is processed to determine, for a user that has not completed the activity, a readiness of the user to perform the activity. Depending on the readiness, the activity can be suggested in a user interface element.

Techniques for improving a user video game experience are described. In an example, a computer system receives event data from a plurality of user devices. Each event data includes an identifier of an activity in a video game and data and an identifier of a mechanic used to complete the activity. The identifiers can be predefined in program code of the video game. The identifiers data can be received based on an execution of the program code. The event data is processed to determine, for a user that has not completed the activity, a readiness of the user to perform the activity. Depending on the readiness, the activity can be suggested in a user interface element.

Techniques for improving a user video game experience are described. In an example, a computer system receives event data from a plurality of user devices. Each event data includes an identifier of an activity in a video game and data and an identifier of a mechanic used to complete the activity. The identifiers can be predefined in program code of the video game. The identifiers data can be received based on an execution of the program code. The event data is processed to determine, for a user that has not completed the activity, a readiness of the user to perform the activity. Depending on the readiness, the activity can be suggested in a user interface element.

A mathematical puzzle game includes a book that has a plurality of pages. Each of a plurality of puzzles is printed on an associated one of the pages and each of the puzzles is selectively solved for entertainment purposes. A plurality of pre-determined numbers is printed on each of the puzzles. Selected numbers are written on each of the puzzles such a sum of a pair of the selected numbers equals an adjacent one of the pre-determined numbers.