Call of Duty Zombies YouTuber MrRoflWaffles had a disastrous end to a high round Black Ops 6 run, leaving the game at round 147 and after 12 hours of play rather than saving and quitting.Black Ops 6s round-based Zombies mode sees players face off against endless waves of the baddies in a bid to reach ever higher levels of difficulty. Saving in Black Ops 6s Zombies mode is only available to solo players, and you can only save one solo match at a time, which means if you leave the match without saving, there is no save to return to.MrRoflWaffles, who has 2.11 million subscribers on YouTube, set out to break his personal best of round 141 and to hit round 200 before the disastrous mistake put an end to the attempt.The disaster began when a confident MrRoflWaffles signaled his intention to save and quit then load back into the match. "This is how this works chat," he declared. "You quit the game, you reload in, and you try not to get bugs."MrRoflWaffles, perhaps moving too fast through Black Ops 6s pause menu for his own good, accidentally selected leave match rather than save and quit. Despite the leave game? warning pop up, MrRoflWaffles proceeded, putting an end to the run forever.All the while, MrRoflWaffles chat couldnt believe what theyd witnessed, with various messages of disbelief littering the screen.Realization then kicked in, and, as youd expect, MrRoflWaffles couldnt believe what hed done. I left?! he said. What?! What?! What?! Are you kidding me?! Youre kidding me! Youre joking chat. Noooooooo!12 hours of my life, MrRoflWaffles eventually sighed after a period of silence. The bugs won. Id rather have fought the bugs! I cant believe I just did that. Im in pain.So, whos to blame? MrRoflWaffles for accidentally pressing the wrong button, or developer Treyarch for putting the 'leave match' and 'save and quit' buttons right next to each other in the Zombies pause menu? For his part, MrRoflWaffles said it was entirely his mistake, but called on Treyarch to make the leave match button a 'hold for three seconds' selection.I really want to blame Treyarch for putting the leave button next to the save button, MrRoflWaffles said. I want to blame them, but honestly this is my fault. I pressed the button.MrRoflWaffles reacts in disbelief after accidentally ending his Black Ops 6 Zombies run. Image credit: MrRoflWaffles / YouTube.In a desperate bid to save the run, MrRoflWaffles pulled the power cable and ethernet cord out of his Xbox, hoping Black Ops 6 would somehow forget what had transpired. But, alas, the game remembered. No save files were available upon loading back in.A clearly devastated MrRoflWaffles decided to end his stream early, saying that starting all over again tilted would only cause him to die early on in a subsequent run. But he insisted he would continue his bid to hit round 200 perhaps once hes had a lie down.Taking on Zombies mode yourself? We've got Essential Zombies Tips and Tricks to help you get started, plus a guide on How to Exfil. Both Zombies maps are full of easter eggs and secrets; here's everything we've found in both Terminus and Liberty Falls, including How to Pack-a-Punch in Liberty Falls and How to Get the Meteor Easter Egg in Terminus.Image credit: MrRoflWaffles / YouTube.Wesley is the UK News Editor for IGN. Find him on Twitter at @wyp100. You can reach Wesley at wesley_yinpoole@ign.com or confidentially at wyp100@proton.me.