ICO's are illegal in Korea, so that is not possible. No plans for ICO.
That means you have your own funds to finance this project?
With 3M users, I think you are already earning good profit here.
So the purpose of the airdrop is for your platform's exposure?
And with your partnerships, I think this project will definitely take off.
And 3M users are only from Korea (cmiiw, because I read it on the first page of this thread) if later ludena has been released globally I'm sure this project will be more successful, coupled with partners from several gaming platforms. But unfortunately the rating on the Playstore is a bit unfavorable because it doesn't reach 4.