Word and line count for my (finally nearly complete!) game:
Scene 1: 21,633 words, 2919 lines
Scene 2: 66,535 words, 5393 lines
Scene 3: 180,318 words, 21637 lines
Scene 4 (sort of an annex to scene 3): 21,008 words, 1985 lines
Scene 5: 67,467 words, 6781 lines
Scene 6: 87,189 words, 8288 lines
Scene 7 (final, and almost done): 91,032 words, 10520 lines... and counting.
Plus there's a codex in the stats screen and some save scenes that add lines without much content.
All of that includes code as well as text, of course. Lots of code. But, yeah, there's a reason it's taken me almost six years.
As far as scene segments go, I try to keep the paragraphs short and not too many paras before a page break... not sure I could give you an ideal line number, though.