Backyard Monsters is a strategy game created by Kixeye with David Scott as its co-founder, where players create and manage a base filled with monsters in their backyard. This backyard is part of a larger world where many other players attack, defend, and build, all trying to create the greatest backyard empire. It can be seen as a mix of Desktop Tower Defense, Travian, and The Space Game. The game currently runs on Facebook.
You start with a week's protection from all attacks. In this time it is important to focus on managing your base instead of attempting to attack. If you attempt to attack anyone, the protection will wear off instantly and the person you attacked (unless the enemy is a Wild Monster Tribe) and people in range of two levels up will be able to attack you. Also, if you attack someone a higher level than you (there is no limit of how high of a level person you can attack) then they will have "vengeance" and will be able to attack you as many times as you attack them. You will find some hints in the First Week Strategy. However, there are many other ways to play the game as well!