When you buy a game, you want to get the most out of it. However, some video games take so long to fully complete that it may not be worth it. Players in a Reddit thread have come together to name just those games that can take up to a decade to complete 100 percent.

A great example shared in the thread today is Final Fantasy 14. It took one player over 10 years to complete the game’s 2,751 achievements, with some of the individual achievements taking months to complete. “One of the achievements requires carefully catching one of each of the game’s over 1,200 species of fish,” one player explained in the thread. “Some fish only spawn once per real-time month.” Another example is the Stanley Parable, where players don’t have to launch the game for five years to complete a single achievement.

MMORPGs are notorious for taking absurdly long periods of time to fully complete. Part of this has to do with their live-service nature: as devs add more content, the overall time to completion increases. While Final Fantasy 14 requires a decade of your life for all of its achievements, interstellar games like Eve Online can take over 20 years to acquire and max out all of its abilities, according to one player in the thread. Some players in the thread think that MMOs are cheat answers, with all the "live-service" stuff. So what about single-player titles (aside from things like Stanley Parable)?

One player cited Civilization 5 and 6 as the biggest time-wasters, with numerous achievements tied to "once in a lifetime" events. Completing them all requires multiple campaigns, and with a single game that can last 10 hours straight, you can see how time-consuming this can be. The Binding of Isaac is another example cited by multiple players, and can take hundreds, if not more than a thousand hours to fully complete depending on your skill level.