Monster Mansion is an adaptation of the Donkey Kong arcade hit from Nintendo.

Your girlfriend has been kidnapped by an ugly monster who took her on the top floor of his mansion. You must go an set her free. To do this you have to complete three different levels corresponding to the three floors of the building.

In the first level you must climb all floors by using ladders to try to reach the monster and your girlfriend. But beware of balls (or barrels?) sent by the monster. They roll all their way down and some of them will go through the ladders. Fortunately you can jump over to avoid them.

At the second level you must collect all the keys to activate the last ladder that will allow you to reach the top floor where the monster and your girlfriend are. Unfortunately this is not so easy because a vilain is constantly chasing you. You can disintegrate it by catching the crucifix which is located on the second floor and by using it against him.

The last level is a mix of the two previous ones. You still have to collect all the keys to reach the top floor, and the vilain is still chasing you, but the monster is startign to throw its flaming balls again. If you can survive and reach the top floor, the monster will be defeated and will fall down the building. Then it will be the great love between you and your girlfriend.

This game is surprisingly good given the limited features of the Cassette Vision. The gameplay is quite original and cleverly adapted to the console features. There are three different tables and intense action. Monster Mansion is probably more exciting than most Videopac games for example!