Games that I have played: The Binding of Isaac (2011)

[JustifyCole]

How did you know the seceret room was there In the basement 1? :o

[killer3234]

@JustifyCole

It's quite simple.

A secret room tends to border 3 or 4 normal rooms (with exception being Basement 1 where it sometimes it isn't possible for the secret room to border with 3 normal rooms). In my basement 1 there was only one place where the secret room borders with the normal rooms. After basement 1 I will have to guess where the secret room is because there are now more possible places where it can be.

Oh and good luck with your runs!