The previous list was deleted and now we are trying to gather up all the challenge cards that earn you neopoints. So sorry this happened. IF ANYONE HAS ANY LINK TO CONTRIBUTE, PLEASE LET US KNOW!!!!! Thanks to IVY and SCOTT├é┬áfor finding the following links.
Here is the link to the Neopets Cards:
*Click to start the game and then click end game. Then send a card.
*You are limited up to about 9-10 games to send a card but it doesn’t hurt to try for more.