Are 100 Stages Necessary, too?

There are many more than 100 stages by the simple action Apps Games.
But, I do it only to 80 stages in Apps Games ”epicbattlesimulator2" which I liked most.
I think that there are too many users of the Apps Games on 50 stages
because they are capricious.
I can increase the stages if I change parameter and the placement of the objects.
However, my "Fly Fly Tank" is limit in 30 stage (+α)
because I keep various change not to get tired in all stages.
Still should there be the Number of the Stages a lot?