ASCII Corridor

You can interpret the shape of a glyph as cover or a barrier, or as an object with a similar shape.
Letters might represent something that starts with that letter, etc.

Result

{% width = {d5} %} {% c = {CHART(60749)} %} {% length = 16 %}

█{%for i in range from:1 to:{{$length}-2}%}Resolve: {Roll on "Wall_Symbol"}{%end%}█

{%for i in range from:1 to:{$width}%}

Roll on "Random_Row"

{%end%}

█{%for i in range from:1 to:{{$length}-2}%}Resolve: {Roll on "Wall_Symbol"}{%end%}█

Subcharts

Symbol (d20)

d20	Result
1	░
2	▒
3-4	Roll on "ASCII Cover or map symbols"
5-6	▓
7-8	Resolve: {O\|X\|*\|>\|<\|▲\|!\|#}
9	Resolve: {■\|♦\|●\|○}
10	≈
11	~
12-20	·

Wall_Symbol (d1)

Result

Resolve: {1-19?█|20?{▀|▄|║|│|═|─|▓|O|S|/|≡|↑|↓}}

Random_Row (d3)

d3	Result
1-2	{%for i in range from:1 to:{$length}%}Resolve: {Roll on "Symbol"}{%end%}
3	{%for i in range from:1 to:{$length}%}Resolve: {1-9?{$c}\|10?Roll on "Symbol"}{%end%}

Split_Symbol (d6)

d6	Result
1-3	≈
4	Roll on "Symbol"
5	Roll on "Symbol"
6	Roll on "ASCII Cover or map symbols"