Growing up, you probably played hide-and-seek, and you probably had one friend who was so good at hiding that it felt as though they'd vanished. Well, imagine that they could literally phase through walls in order to win, and you'll have an idea of how Mario Odyssey players are feeling right now.
Mario Odyssey's new mode, Luigi's Balloon World, is like hide-and-seek, but with balloons and plumbers. One player hides a balloon in one of Mario Odyssey's worlds, and another is tasked with tracking it down. If you successfully find a balloon or another player can't sleuth out one of yours, you earn coins. A lot of coins, if you find a bunch of balloons in a row and get a streak going. As a result, some players are exploiting a glitch that lets them clip through walls in order to hide balloons out of bounds, rendering them nearly impossible to reach.
Here's one example from Tristan Cooper:
Players have already destroyed Mario Odyssey's "Hide the Balloon" DLC by glitching into buildings and placing the balloons in impossible-to-reach areas. pic.twitter.com/biy3VxkBkg
— Tristan Cooper (@TristanACooper) February 22, 2018
And here's another from Emperor Andy:
The problem, to hear players tell it, is especially prevalent in New Donk City.
On Reddit, players are posting warnings about the glitch. Some are even calling for people who exploit the glitch to be banned.
"It's incredibly frustrating to have my streak ended when there was no way for me to get the balloon without exploiting a glitch in the game," wrote player specfagular, who started a thread calling for bans. "I seriously don't understand what kind of sad sap you have to be to make your balloon impossible to get and ruin the fun of the mode just for a few coins."
Other players hope Nintendo will patch the exploit in the near future, and they figure they will just have to sit tight until then. However, some worry that if Nintendo decides to take a scorched earth approach and eliminate well-known out-of-bounds exploits - rather than applying a lighter touch and preventing balloons, specifically, from being able to go out-of-bounds - it will hamper the game's speedrunning community, which sometimes takes advantage of those kinds of glitches to shave seconds off their times.
"It seems like a really bad design choice to not limit where people can place balloons," wrote a player named 02Alien in a thread about clipping. "I'd much rather they do that than remove all of these out of bounds tricks/glitches."
The ball, it would seem, is in Nintendo's court. Or maybe it's a balloon, and it's inside the wall of a Labo factory. Whichever. You get my meaning.