Doodle God has a Main Story for you to play, but there are also other modes as well. The Main Story is made up of four episodes. You have to get 100 of the elements in Episode One to go on to Episode Two. This does not mean that all the ? on your groups will be filled. It just depends on which elements you create. For example, I managed to miss Dust until Episode Two, but I had Quicksilver very early. You might also have a different set of elements from a friend playing as you just have to get 96 elements (plus the four you started with for 100 total), not a specific list of elements. You unlock Episode Three when you have 140 elements.
Once you get to Episode Three, you’ll find some groups missing, like all the mythical creatures. You also will not be able to make them with the previous combinations. Personally I miss the dragon, but I just like dragons. You will also find that things that wouldn’t mix before, like Glass and Water, will now mix. This means if you were just combining every element with every other element to see what worked, you’ll have to work back through them again.
I only needed 197 elements total to get to Episode Four. I didn’t have any ? on any category left. Episode Four gives you Magic as a new element. You also get back all of those magical things that they took away for Episode Three. However, you will notice all of your technical things are gone this time. One thing that really threw me off is that Human was moved out of the human group and down to a races group. It took me a bit to find it! The weapons were also moved to their own group. The fire group is gone completely and fire moved to the yin/yang group. I really didn’t like things moving around that much, but I guess it had to be done. It was just difficult to find things since I was already used to how they were before.
Other than the Main Story, you’ve got Quests, Artifacts, Puzzles, Tournament, and Encyclopedia. For Quests, you will need to create elements to accomplish whatever task they need. For example, the first one is help Santa make presents. Once you beat that one, you will unlock another. Some Quests, like Devil vs. God, are unlocked as you complete things in Story Mode. Artifacts are historical items that you will need to create based on elements that you have unlocked during Story Mode. In Puzzles, you are given a set amount of elements to work with and you are trying to make a specific item. Once you combine elements in Puzzles, they disappear, so you have to be careful and get the right order. Tournaments start every day. You can choose to compete in them as much or as little as you wish. You will be playing against other players in the real world. The Encyclopedia has a list of all the elements that you have discovered and random quotes about them. I love the quotes as they are amusing. The one under Death Metal says "We have no quote about this." I found that entertaining. On any element, if you click the "W" on the bottom right, it’ll take you to the Wikipedia article pertaining to that subject (even Death Metal).
