I have one question and it about donnor card what are the for?
Please help!!!

Whoever picks up a donor card, gets the super weapons that the donor had.

yes but i collected couple of donor cards and nothing happend

If the player didn't have any super/special weapons then you won't get anything.

thx for the info

one more question in shoppa mode can the card be collecte instead of a crate?

Probably not but ask the host. They set house rules.