This post is in reply to the above question asked by @monoarc
Many times we play a simple card game called UNO. It's inexpensive to buy and relatively easy to learn to play. Older children as well as adults can enjoy this game. It doesn't take partners to play and a various number of people can play, so you can accommodate a bigger group. There are also a couple of variations so as not to get boring. You can keep score and play a certain number of rounds of the game or you can let each individual round have a winner and just play for the fun. It's not complicated but does involve strategy so it can keep everyone interested and entertained.