these are 3 different types of titans.and for every type of them there exist 4 different level.
Heroes: There are 4 heroes with the max level of 3000.Every hero have different abilities except 2 abilities that are same for all of them and with buying special Item their abilities and powers will become so much more.
Over 20 quests: You can accept a quest with joining the 3 main division and talking with their leader.every division have more than 7 quests to take.But you need to have the wanted level for every quest.with Plantations you can move from a rare item shop to an other one with spending some money. Seaports and Plantations: in every city there are seaports that you can move instant from a city to an other city so easy but with spending some of your gold.Bosses: There are 4 bosses in this map: Ape titan,Colossal titan,Armored titan and the female titan.They are so powerful and beating them requires so much work.but the reward is some high class drop items with gold and division point and so much exp.when you join a division your division level in that division is 1,with spending gold and doing levelup your division level your income becomes more and more.Also for buying some items it requires a specific level in a division.
#Are there any attack on titan games upgrade
for joining that 3 main divisions you need to join training division and upgrade your level in it.With joining a division you can buy some S class and SsS class items that only can be bought if you are joined a specific division,or division items.Other use is special ability.like gold income ability if you join military police.