Here is a simple overview of the concept and how you play the game.

1) Collect DNA strands. You can get them in various rewards or by buying them in the DNA market for F-coins.

2) Build players from your collected DNA strands.

- the higher the rarity of the DNAs you inject into your bots the better the players will become.

3) Set tactics and play games. Finish top 7 to promote to next league level.

There are tons more to it of course. But these are the basics.

If you need more info then just browse the FAQ for more details.