For limited releases, Nike has a different release system than the "first come first serve" system most are used to. Nike releases hot or limited shoes on their SNKRS app and occasionally on desktop.
SNKRS or SNEAKRS for our EU friends is an app developed by Nike dedicated to releasing highly sought after releases. To purchase on SNKRS you need a Nike+ account with a verified phone number attached to it.
Different types of SNKRS releases
Not all SNKRS releases are the same. There are 3 main types of releases depending on the shoe that Nike may do. It's important to know the difference between these release types.
A flow release is basically "first come first serve" (FCFS). Most people are used to FCFS releases from other sites. Nike doesn't do FLOW releases very often, and when it does it's usually for surprise restocks.
LEO releases are the most common types of releases. LEO is similar to FLOW (FCFS) but contains a raffle aspect to it.
The way a LEO drop works is you enter your accounts to purchase the shoe. Nike will randomly pick from the first accounts that entered entries that will be allowed to continue with purchasing the shoe. The number of entries picked depends on stock for the size you chose.
With a LEO release Nike starts picking winners at :02 which is why it's best to get all of your accounts entered within the first 2 minutes of the draw.
With a DAN release Nike will give people 10-30 minutes to enter their accounts. Like a raffle, Nike will pick entries to win the shoe and go through with checkout.
Nike usually does DAN for their most limited releases.
For LEO and DAN releases it really comes down to luck. The more accounts you enter the higher chance you have of winning.