Hello there,
All are renpy versions. It only depends on which platform you're planning to play.
There is windows/Linux, Mac, android, and compressed (if you have slow internet connection or little space) for Windows.
Shli
Viewing post in Chapter 3 – Dev Update 11: Two weeks only! comments
Oh, sorry, I misinterpreted your question. It's Renpy 7 unfortunately...
However, players from my discord server told me there is a web version available here : https://porngameshub.com/dreamland-wanderer
I haven't built that one and I'm not affiliated with the website but it seems to work without issues. Maybe that's the solution to your problem.
Anyway, thanks for playing my game. I'm glad you enjoy it!
Shli