I have the iOS version of Colt Express and haven't yet figured out how to do local multiplayer (ie. pass and play). According to this article local multiplayer is possible, but it is hard to find any other information on the matter.
What I have seen so far is that any option under the local game tab in Classic mode seems to assume I am the only human playing. Whenever I select a character, it throws in 5 computers with me and starts the game. I can't figure out how to make it acknowledge that more than one human is playing the local game. If local multiplayer isn't possible, it would make this the first board game adaptation I've seen that doesn't offer such a feature, so I felt it unusual enough to ask.