Welcome House is an adventure game where players take on the role of Keaton Paxman visiting his rich uncle Parkinson on April Fools. When Keaton arrives at his uncle's estate, his car breaks down and the door gets jammed when he enters the mansion, trapping him inside.
The game has a lighthearted tone, with plenty of slapstick humor and a laugh track to accompany its mistakes. There are no enemies in the game, and Keaton can't die - instead, the traps that line the mansion are mostly there for comedic effect, making it suitable for all ages.
Players will need to search for keys, books, food, and other objects to unlock doors and progress through the game. The gameplay is focused on exploration and puzzle-solving, with a dash of humor and wit.