Sometimes when I poop I play Marvel: Contest of Champions on my phone. It's like a simplified version of Mortal Kombat, but Marvel themed. It's pretty good(and complicated) for a free game, and if you're the gambling type you can spend tons of money on the microtransactions. I have a couple strong characters and a lot of shitty ones I don't even use. I think right now my best are M.O.D.O.K., Nightcrawler, and Civil Warrior(basically Captain America in an Iron Man suit). It's fun but it's a pain in the ass to level your guys up. To get the most of it you really have to play constantly, and I just don't care enough. There are items you NEED that you can only get on specific days of the week, quests with time limits, and you have a limited amount of energy to make moves.