Imagine everything you know about Pokemon. A character that goes around collecting other characters. Characters that have certain types granting them advantages over other types. A world where you roam up through shrubs, bushes and other characters. Towns and wild bushes to traverse through.
You know, the core tenets of the original Pokemon games. That's Pocket Mortys, the Rick and Morty themed rip-off of the monster collector, and it's great.