PHILADELPHIA (CNN) — Cards Against Humanity says it wants to save America.

The controversial card game company says it has purchased land on the border of the United States and Mexico in attempt to impede President Donald Trump from erecting a wall.

The plan is simple, according to the company, as interested people sign up to send $15 and in return, they will receive a mailbox stuffed with six surprises.

The announcement was made on Tuesday and by Wednesday morning, Cards Against Humanity said it was sold out.

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On its website, the company has the following message posted:

“Donald Trump is a preposterous golem who is afraid of Mexicans. He is so afraid that he wants to build a twenty-billion dollar wall that everyone knows will accomplish nothing. So we’ve purchased a plot of vacant land on the border and retained a law firm specializing in eminent domain to make it as time-consuming and expensive as possible for the wall to get built.”

Cards Against Humanity said that contributing to the land purchase and its legal defense was the first of six days of gifts that customers would be receiving in December.

“On Day 1, all Cards Against Humanity Saves America recipients will get an illustrated map of the land, a certificate of our promise to fight the wall, some new cards, and a few other surprises.”

Customers who wanted to join in had to complete a survey that included personal questions and the query: “Who did you vote for in the 2016 election?”

The company did not say where the land is located. In a video describing the project, it says that it bought “acres” on the US-Mexico border, while displaying footage of wild horses galloping across desert scrubland.

Cards Against Humanity did not immediately respond to an email from CNNMoney asking where the land is.

The company, known for its popular “party game for horrible people,” engages in pranks like selling $50,000 worth of nothing on Black Friday, which they did in 2015, and raising $100,000 to dig a “Holiday Hole” to nowhere, which they did last year.

Earlier this year, the company launched a new card game making fun of the tech sector, called Cards Against Silicon Valley, with cards labeled “understated sexism” and “Nintendo-based drinking games.”

The company also applied to trademark the term “fake news,” Trump’s favorite moniker for CNN.

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