Which one is better?

Hello guys!

I’m creating a casual game and the idea is to have tons of ‘maps’. The game is meant to be like ‘one more brick’ there is no map for real, it’s just some actors spawning and being destroyed by a bouncing ball. Anyway, I want to make levels and change the position of the actors in each level, increasing difficult. The question here is:

Should I create tons of Maps in Unreal or I should just use a variable ‘level’ and put the actors to spawn when their level is called? Which one would be better to keep the game running without trouble?

It’s meant to be a mobile game.