You might want to dig through your old stuff because there might be hundreds of thousands of dollars of worth in there.

This unopened copy of "The Legend of Zelda" for Nintendo Entertainment System (NES) from 1987 seriously just sold for 870-grand!

Another auction sold an unopened copy of "Super Mario Bros." from 1986 for $660,000. Apparently, the original owner of that copy forgot about it in a desk drawer.

So, I'm not kidding when I say check around your house if you have one of these classics lying around.

Now, I understand that box art says the game case includes "invaluable maps and strategic playing tips," but I'm still scratching my head on this one as to why someone decided to drop $870,000 on this.

"The Legend of Zelda marks the beginning of one of the most important sagas in gaming; its historical significance can't be understated ... it is a true collector's piece," said Valarie McLeckie from Heritage Auctions, which sold the game on Friday.

Okay, I understand that... And I'm quite the Nintendo fan myself, but I'm just trying to imagine what circumstances in life could lead anyone to say:

"Yeah, so, the next life decision I'm going to make is to pay nearly a million dollars to for an NES game."

Maybe this person has never played the game. Even so, it seems like a high price to pay for being late to the party... Perhaps the person thought:

"What's all this fuss about 'The Legend of Zelda'? I need to play one of those games... Oh, cool! Here's a copy I found for just under $900,000!"

Also, do the re-released digital versions of this game not suffice? There's even a "soup-ed up" version of the game that anyone can play with a Nintendo Switch Online subscription!

"I just want to blow air into a dusty old cartridge again, and you can't put a price tag on that," he or she might've said. "This auction price is PENNIES compared to the value of that NOSTALGIC SENSATION."

"And the GRAPHICS. I mean... That's -- that's really what this is all about."

"I just want to play as Zelda, for the first time, in his original form!"

No, you dummy! The main character's name is not Zelda! That's the princess' name!

Anyway. I get it it. It's a collector's item. But holy cow that's a lot of money.