This app was mentioned in 9 comments, with an average of 3.00 upvotes
Thank you! As a fellow colorblind person I favor the lettering :D I was ecstatic when Trainyard added letters shortly after I contacted them about my issue and to this day I continue to tell people about it.
If you're into puzzle games, I'd recommend Trainyard. The controls are intuitive and straightforward, but the simple premise can get quite complicated.
It's a puzzle game. The puzzles start off very easy (basically to teach you the mechanics), but they get much more difficult.
I think Rail Maze is similar to Trainyard. I believe Trainyard was the first puzzle game of such kind.
https://play.google.com/store/apps/details?id=com.noodlecake.trainyard&hl=en
I like it. Reminds me of Trainyard.