Hello Jompilomp,
Sorry it feels empty to you, we only had 5 days to make it because our original idea was taken by someone else and we had to switch half way. A lot of the features we wanted to add couldn't be added due to our time crunch, but we are working on an update now. For those who don't know because it wasn't in the description, you can hide from the trains at stations or worker areas halfway through the tunnels on the left side, make sure the signal is clear before you proceed.