Will the game ever have multiplayer?

It gets awfully boring and repetitive alone.

I definitely agree with you. A PvP arena or sort of something alike it would be a nice addition into the game. Guess it is to level all of your Mortys to 100 in the mean time! ~

It would be cool to be able to trade Mortys too, since you mention it. I've got some powerful duplicates as a result of using coupons, & have what can't be the normal amount of trouble finding new rares

Look at that, question answered.

It would be nice to add multiplayer, right? There's a talk about this on the Discord website. Might as well check this out discord.gg/RSzVEqG

Actually, there is a beta multiplayer version that is in testing right now. It isn't available yet for us because we don't have access to it unless we become a tester. I found that out by Googling it. It's around, just in beta stage and in testing. Give it a while to get released, they're most likely making sure everything runs smoothly and easily without bugs before releasing the whole new update.