The Curse of the Train [prev. Steampunk Train]

"Cemetery of wondrous mechanisms" - so the locals dubbed a small part of the Gulf of Mexico near the southeast edge of Texas. According to rumors, at the beginning of the last century in these parts was a workshop of a talented and eccentric engineer who dumped his unsuccessful experiments right to the bottom of the bay. As the hardcore adventurers, you decided to check out a beautiful legend, going down to the bottom of the bay with scuba gear. However, something went wrong - your instruments began to fail, the oxygen level in the scuba tanks began to fall precipitously and your only chance to survive is a small and lonely train car of a f train.