It's been the cause of countless family arguments for generations, creating long-held grudges and battles in millions of household across the world.
No, we're not talking about who controls the remote or who left the toilet seat up – although those are very contentious subjects, admittedly.
Unsurprisingly for a game where winning hinges on bankrupting your competitors, Monopoly brings out the worst in all of us. The battles waged over the Monopoly board go down in the annals of family history; that time your Aunt Bertha bought all the property to fix the game, or when your dad smashed up the board after losing (badly).
And, as if we didn't take it seriously enough already, there are going to be some big squabbles in 80 lucky French households very soon.
To mark the 80th anniversary of the birth of everyone's favourite board game, Monopoly's manufacturers are stashing real money in 80 sets of the game – as much as 20,580 euros in a single box.
Only one set will contain the euro jackpot, while 10 will conceal five 20-euro notes, two 50-euro notes and one 100-euro note.
The majority of the sets will have five 10-euro notes and one 100-euro note stashed inside them by manufacturer Hasbro France, which sent out the prize sets this week.
Unless you've been living in a communist country for the last 80 years, you'll already know that the object of the game is to buy property around the board then build houses and hotels and create a fictional property empire, charging rent to anyone unlucky enough to trespass on your squares. With the addition of real money, players are at risk of becoming even meaner with their cash.
Personally, we take lots of pleasure in systematically making all our loved ones poor and becoming a fictional property tycoon – after all, Monopoly is the only way we're going to own property anytime soon.
Showing off Monopoly success – and taking the game too seriously – is a favoured pastime on social networks...
literally teared up during monopoly— ross marshall (@rossdaboss66) February 6, 2015
Think this is what you call "bossing at monopoly" pic.twitter.com/IKUYUcpovd— Burton (@_burtooon) February 6, 2015
Monopoly with siblings 💰— Aljohn Ramos (@aljohn__) February 6, 2015
Games of Monopoly can sometimes take several hours – or, more relevantly, quite a few bottles of wine. The longest game, according to Hasbro, lasted 70 straight days.
We can think of better ways to spend that amount of time… game of Kerplunk, anyone?
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