Aiming to get a 101% completion rating in Donkey Kong 64, the stream lasted for over 50 hours. He began the Donkey Kong 64 Charity Nightmare for Mermaids stream on Twitch on January 18. With this grant going under review as a result of Linehan using the website Mumsnet to flood the British National Lottery with concerned emails, Brewis took it upon himself to try to raise his own funds for the organization. As to why Brewis picked Mermaids, he said 'I chose to support this charity because, as a person living in Britain, I find the media discussion surrounding in my country, especially in its tabloids, to be woefully misinformed.' Brewis' impetus for starting the stream came after Irish comedian Graham Linehan (known for co-creating The IT Crowd, Black Books and Father Ted) criticized the British National Lottery for issuing funds to Mermaids. Brewis announced the stream on YouTube on January 14, saying he chose to stream Donkey Kong 64 because he never beat the game as a kid, even after playing a single save file for nearly 60 hours.

Though his initial goal was to raise $500 during the stream, he ultimately raised over $347,000 as evidenced by the final tally of his twitch stream. The stream was held by English YouTube personality Hbomberguy (Harry Brewis) to raise funds for Mermaids, a British charity that supports gender diverse and transgender youth in the UK.

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