It is possible to have a game night even when you don’t have an official board game or card game. There’re many different games that you could play with simple materials. For example, charades is where one person chooses a word and tries to draw it so that his team members will recognize what he’s trying to draw in a certain amount of time.
Then there’s the forehead game where each person writes down the name of a famous person on the paper. The cards are then shuffled and given to people who put them on the foreheads facing out so that everyone else can see where they are but they themselves cannot. They have to ask questions to other people to figure out who they are.
Here’s some other sites where you can find simple games that do not require a lot of set up, but can still be a lot of fun.