I had a dream where I was at my grandma's house, except she was a lot older, uglier, and her hair was long and bright white. I don't remember much, but I remember seeing a bowl of marbles and putting them all in my mouth. Everyone got mad at me and I swallowed one of the marbles.
Also, my grandpa appeared and said something. I saw nothing unusual with that despite him being dead for one and a half years.
Later in the dream, I played what I was told was a Sonic game but with Mario as the the player character. It looked similar to the Hot Shelter from Sonic Adventure. Two enemies I remember was Koopa Kid from Mario Party who chased Mario down and you needed to stomp on him at least more than once (I moved past him without defeating him), and the other was a tiny squirrel that walked in a circle and every second it would turn into the polar bear from Ice Climber and then back into a squirrel.