The rollercoaster was...too boring for me. So I made into a rollercoaster/mine ride. It's the same concept, horse drawn cart, but you're underground in an old mine.
Here's the plot: The first part of the ride is a walkthrough; you walk through a castle where a story unfolds. The royal family lives in peace; you see them eating and partying. Unfortunately, a sinister assassin lurks behind a curtain, unseen. You pass into the lower regions of the castle, where you see a gathering of multiple assassins in teh wine cellar. You come back up on the other side to see the castle in flames. The guards are desperately fighting off the oncoming enemies.
You then see a door that leads to the underground mines. You enter to find yourself in a mine with several carts and a miner. Talk to the miner and he'll tell you to escape the castle using the horse drawn cart. You get on and immediately embark on a mine ride. Thing is, the mine is old and unstable. You'll face terrfying drops, falling rocks, and sudden stops. And you'll be in almost total darkness.
Sound fun? That's just the beginning. You'll have to dl to find out more.