Is simple change a value can affect the target.... In space rpg 3 you can put unlimited armor increasing the life radically but only before put weapons and itens we want.
In space rpg 4 is the same but have some limitations but this is good... I explain... When you put 2 billions of armor the game belive you get negative value for this reason you have a lot of mass for weapons and upgrade when want unlimited life put the armor pieces in 200 millions and go to kill a lot of ships