So it's just like being a real dungeon master. The PC's are always idiots, and will always ignore your masterfully built encounters.
"You come across the Caverns of Aranea, where legends say the ancient-"
-"Nah, let's not go in there. Hey, let's head back into the woods!"
"But... but the Caverns are-"
-"Hey guys, I just jumped down a hole!"
*throws a stack of maps into the garbage* "Fine... you choose to ignore the Caverns"
This happened in the D&D game I DMed.
I'm building a dungeons and I'm like, flavor text tunnel here, flavor text tunnel there... but let's make 1 of them be a "I HAVE DONE A TERRIBLE MISTAKE TUNNEL" for shits and giggles. Start it off with a hard warning pit trap that if you fail makes you lose a decent amount of HP. Then the tunnel will turn and narrow. Blood streaks on the floor as if things were dragged in this direction. It becomes smaller then ends up going down a slope, it's pitch black and the ground is grimy. Immediate hard athletics checks off the bat. It gets grimier. More hard athletics checks continue. Only 1 party member was trained in this, if I recall correctly. Hard Stealth Check to see a small door used by Goblinoids while this is going on.
If they fall and go down the slope it goes down and down with random small carcasses in the way, so normal Acrobatics checks to see how badly things can get. Then it's a sudden chute, where they fall 40 feet into a huge pile of bones.
They'd find themselves in the back of the room, on the other side of it, a huge pile of gold. I didn't give a shit, it was worth 10000 GP. Take it. You'll need time though. The air inside is rancid and smells like chlorine gas, Hard Endurance Checks every round. Large nest is there with 2 chromatic wyrms, wondering what to do with this party who just got in if they get too close to them, they'll cry out and attack.
They have 8 Rounds before A Female Mature Green Dragon comes back to her nest.
I really doubt they would have survived this.
Wyrm grub food.
Sadly, their most adamant party adventurer was leading this pack foolishly and didn't successfully roll his RL charisma check, opens the door without them anyway while they were several rooms away... and critically fails the trap.
He didn't opt to heal before this... and.... the damage killed him outright.
Stunned silence on Vent.
There were tears.
Begging even.
I'm a softie, so we re winded time.
I hoped they'd continue down this hall. Lead them all to a TPW.
Didn't happen.
Oh well.
Honestly, I had made 40+ random encounters for the sake of things and many tricks like this were lined up my sleeve.
I still have fond memories of the dream world this party went in and started murdering each other in IC hatred, re-rolls were done, new characters.... then the last game started with everyone waking up, included the murdered characters.
Ah, good times.