A birthday party 'invitation from hell' has been mocked online after racking up over a million views.

The invitation, apparently sent by a one-year-old boy's mother, demanded a number of gifts for guests to bring to the party.

She asks for a water table, a play tunnel, tent and book for her one-year-old, adding she had sent a separate list to her mother and sister-in-law to 'avoid duplication'.

An anonymous Reddit user shared the invitation, explaining a colleague received it from a family with a 'very significant income'.

"With [our child's] birthday coming up, we thought we'd ask for four items that he will really get a lot of use out of in the coming months," the invite says.