Mattel Intellivision Game: Hard Hat [Prototype] (1979 Mattel Electronics)
4A platform game where players control a construction worker whose job is to add windows to two separate buildings.
Each building consists of six floors that contains space for five windows per floor. The buildings themselves are separated by a crane holding a scaffolding. Players have to grab the sheets of glass from the scaffolding and place them on each floor one by one. However, there is a vandal located at street level who occasionally hurls a rock to break a sheet of glass that had been added to the building thus slowing down the construction workers job. If the player can get five windows across on a floor or six windows lined up vertically with one on each floor, the glass becomes unbreakable thus thwarting the vandals vandalism.
Since the scaffolding moves to each floor, players have to get to the higher floors of the building by climbing pipes. Once the player takes ten windows from the scaffolding, it goes back down to the street to get a refill of sheets of glass. During this time a cooler filled with soda will randomly appear on a floor which the player can scurry to in order to gain some bonus points before it disappears. The game ends when all the windows get added to the building and the player climbs to the top of the building to receive their final score.
There is also a two player mode where two players compete against each other to see who can put up all the windows for their building first. Players can slow down their opponents by smashing their windows with a hammer. The gameplay rules of the single player game apply in this mode too. The player who has the highest score at the end wins the match.
This game was planned to be released for the mattell intellivision console but was cancelled.