The two day event, featuring four shows was presented by Diversity's Jordan Banjo and Perri Kiely and for the first time Slimefest regulars social media stars Max and Harvey.
Take a look at all the fun and mayhem in pictures taken by photographer Jonathan Hordle
Fans who missed out can catch up with all the fun with the highlights show, which will air on Nickelodeon at 6pm on Friday November 5.
1. Slimefest 2021 at Blackpool Pleasure Beach Arena
In the slime pit at Slimefest in Blackpool
2. Slimefest 2021 at Blackpool Pleasure Beach Arena
In the slime pit at Slimefest in Blackpool
3. Slimefest 2021 at Blackpool Pleasure Beach Arena
In the slime pit at Slimefest in Blackpool
4. Slimefest 2021 at Blackpool Pleasure Beach Arena
In the slime pit at Slimefest in Blackpool
6. Slimefest 2021 at Blackpool Pleasure Beach Arena
Kids have the slime of their lives In the slime pit at Slimefest in Blackpool
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