All Sweep Coins must be played three times (3x) to be eligible for redemption. For example, if you have 50 Sweep Coins, you will need to use a total of 150 Sweep Coins before they can be redeemed for a prize.
Sweep Coins obtained through giveaways have a 10x rollover/playthrough requirement. This applies specifically to Sweep Coins earned through bonus codes, daily bonuses, or promotional giveaways.
If your would like to view the current list of excluded games, you can open your wallet, click redeem, and then click the hyperlinked list of games to see the most up-to-date exclusions.