Various Gameplay Tips
There are three different types of Crabs: Amethyst which are fast and attack in swarms; Emerald crabs you'll unlock after 50m and are adept at scaring critical hits; Garnet crabs you'll unlock after 80m and move slowly but pack a big punch.
Whenever you evolve a crab after crab level 500. you will also receive one DNA.
Queens are the leaders of your swarm and they spawn automatically and will deal constant damage. You can have no more than 30 queens in total.
Keep in mind each queen has eight skills that you can unlock when your queen reaches level 5, 10, 25, 50, 100, 200, 400 and 800 respectively.
Also when you reach level 200 your queens will be able to evolve, granting them a huge increase in damage.
You can use earned DNA to research up to 36 unique mutations that are powerful and give you special abilities. Each crab type has 3 mutations and if you collect them all you'll get bonus DNA.