When you purchase a game, you want to make the most out of it. However, some video games take so long to fully clear, it might not be worth it. Players in one Reddit thread have gathered to name precisely those games, in which 100-percent completion could take a decade.

One prime example shared in the thread, posted today, is Final Fantasy 14. It took one player over 10 years to obtain the game’s 2,751 achievements, with a few of the individual ones requiring months to complete. “One of the achievements requires carefully catching one each of over 1,200 species of fish,” a player in the thread explained. “Some fish only spawn once every real-time month.” Another example is the Stanley Parable, which requires players to not launch the game for five years to obtain a single achievement.