How does Sandbox Mode work?

Hi, I’m a Patreon pledger asking about one of the exclusive features: How does the $3 tier’s sandbox mode work? There’s little description on the page and zero help on the play site, the best I can find was a single forum post showing a chatlog where it was used as a command, but that’s it. Can I request any detail on how sandbox mode is used on behalf of myself and other fellow patrons?

Hi Mario18238,

Currently, in order to do a Sandbox Mode match, you should send another player a challenge through the popup and select Sandbox Mode checkbox. The other player doesn’t need to be a donator. When that player accepts your challenge the game view will contain a panel that lets you to add any card in the database into the game.

I am planning to improve sandbox mode to make it fully single player soon.