Matt Leacock almost single handedly invented the co-op genre, where players work together to beat the board, and even today he remains best known for Pandemic... the game where you work together as a global viral response team to step up and save the world. This has - somewhat surprisingly - been a huge seller in the run up to lockdown.
Work together as you travel the globe to treat infections while collecting the cards you need to discover a cure for each disease. But the clock is ticking as outbreaks and epidemics fuel the spreading plagues. As a cooperative game, players win or lose together. Only by working together can you keep the outbreaks in check and find the cures in time!
What makes Pandemic one of the best games of all time? Well, its collaborative. You are all playing together, by playing together, to achieve a goal.