This is most likely a random giveaway.
Kmart put a bonus 12,000 points, worth $12, in my Shop Your Way account last week. The only catch is that they will expire this Tuesday. They can be used on video game purchases.
This is the second time Kmart gave me $12 in time-limited points in one month. The first time, the only limitation was that I couldn't use it on groceries or pharmacy purchases. In the past, they usually only give out $3 to $5 in time-limited points.
If you have a SYW account, you can check if you got bonus points by logging in to kmart.com. A pop-up should appear around your point total with the bonus points shown.