In my rmxp game, there are plenty of spike traps in the game. But, the main character never dies. The life of the character stays at 1. How can I fix this?

What are you using to reduce their health?
Deal Damage or Change Hp?
With Change Hp you have to click the "allow knockout in battle" box if you want it to go down to 0. If all the actors are 0 it will trigger a gameover.
If you use Deal Damage the health can go all the way to zero but you won't get a gameover until you enter combat.

Just use Change HP instead to fix the problem.

Ok, thanks. I will correct it.