From the box blurb:
Now play the junior version of the world's most popular game on CD-ROM. Join Mr Monopoly and his nice and nephew Sandy and Andy in a fun amusement park with stalls, fun buildings and rides.
This is a faithful representation of the Junior Monopoly boardgame. Mr Monopoly pops up to tell you what to do to enforce the rules of the game, which is quite helpful for small children, for example if you try to pay the wrong amount he will say so and ask you to try again. Similarly you have to click on your destination square correctly after you've rolled the die.
There are also 8 minigames you access by landing on the appropriate square. They have no bearing on the game but are fun as a diversion.