For real time tournaments, you have to make it to a sufficient round (or reach a minimum placement) to earn a prize. If the tournament participation is small or the tournament pays many placements, it is possible that everyone can win a prize. However, you need to remember to check in before the tournament starts. The check in window opens 15 minutes before the tournament starts and if you do not check in, then you will not be participating in the tournament and will not be eligible for a prize, even if there would otherwise be a guaranteed prize. Please read: Why don’t I have any battles for the tournament that I entered? If you checked in to a real time tournament, you can win a prize (if you reach a sufficient round) even if you do not win or draw a single game or if you flee all your battles.
For any time tournaments, you need to win or draw at least one game in order to receive a prize. You need to make sure you meet the SPS staking and Collection Power requirements when the tournament begins and then you need to win/draw at least once (you can't flee or lose all your battles).
At the end of the tournament, tokens like DEC or SPS should be distributed automatically. For custom tournaments, custom prizes (including Splinterlands cards, boosters, land, or totems) and also non-standard tokens need to be manually distributed by the tournament organizer. If you won one of these prizes and have not received your prize then please contact the tournament organizer.