Starts on lzdoom and gzdoom on Delta Touch. Starting in the bedroom you can interact with computer but as soon as you go outside you are walking in darkness not able to really move far.
Which version of GZDoom are you using? I'm developing this in the latest version (4.10), it might not work correctly in older versions.
I'm sorry the game doesn't explain itself at all, I am working on that. I'll add a message at the very start notifying the player to press F1 to open the help screen, which will have some information in it. As of yet it has none.
Anyway, if you can't see anything at all in the darkness, you might want to increase your gamma a little bit, although there's nothing much to see regardless. What you should do at the start is walk on top of the bed so you go to sleep and wake up in the dream world. From there you are able to leave through the door that won't open in the waking world. This takes you to a hub map that leads to all of the different dreamscapes, which you can visit in any order you like.
One more thing: this game is meant to be played on a computer, preferably on GZDoom 4.10, which is the version I use. I do not plan on supporting older or mobile versions of GZDoom. It probably does work on some of the older versions, but I cannot guarantee it.