The Treehouse DOS Game

Does anyone else remember playing The Treehouse or The Playroom or The Backyard as a child? They were classic DOS games that I used to play as a kind and I was wondering if anyone else played them because I've found a place where you can download the Playroom and the Treehouse for free. I haven't been able to find the Backyard yet though, and that one was my favourite. :( But I have many fond memories playing these games, with their funny and more than annoying noises and with the Robot and Look-A-Lot and the possum that always wants a nap then makes you wait ages for it to sleep... Ahhh, memories...