What is the key to winning Spades Online? from James Harry's blog

So Spades Online is for those who like the card and smart tips.Each participant deals a card onto the table. The card must be of the same suit as the initiator. You can play any card if you don’t already have any cards of the same suit. The unique feature of this game is that you will win the trick if you play a spade card and there are no other spade cards in the trick higher than yours. If you don’t have any cards that match the first card, you will forfeit that trick. The first player will also win that trick if no cards are dealt that match the first card’s suit. The trick winner gets to play first in the subsequent round.