I applied through an employee referral. The process took 4 weeks. I interviewed at InnoGames
Interview
Very pleasant talk with HR, then with a dev of the game followed by a practical task. Chemistry will be checked first, proficiency second. The task itself will be done within a week and after a revision of them, you will be invited for another talk if the task impressed.
Interview questions [1]
Question 1
Do you play the type of game you want to apply for and do you have an affinity for the genre the game has?