Two of Hearts was a game at the train yard. It was completed by Saori Shibuki.
- Only one person is allowed to board each train.
- If you are able to get through all 4 carriages, Game Clear.
- One of the 4 rooms is filled with a lethal poisonous gas. If you open the door and breathe in this gas, it is Game over.
- You are given a gas mask and 3 cylinders of air and each cylinder provides 5 minutes worth of air.
- Once you enter a carriage, the door to the next carriage will not open for 5 minutes, meaning you use up the canister no matter what.