Played Gauntlet last night for about three hours. For me, the game fits the definition of mindless fun. There's not much to it; move through each dungeon, kill a bunch of enemies, collect a bunch of gold, rinse and repeat.
I think it's best played with friends that you can talk shit to; "Oh, did you need that food I just destroyed." or " Did you just die, allow me to loot your corpse." That's the real fun of the game; trying to survive, and seeing who has the most gold at the end of the dungeon. It's also fun racing for the crown, and if you don't get it trying to get whoever has it killed so you can grab it.
The trophies are stingy; I only got the one for beating the first boss. And the Wizard has a spell you can purchase that is really broken. It doesn't do a lot of damage, but it slows down the enemies and they can't attack you. My buddy was playing as the Wizard, he would use that spell, and I would attack the group of enemies from behind with the Warrior.
Side-note: The buddy I was playing with last night I've known since 1st Grade (33 years). There are actually four of us that have known each other since 1st Grade, and we all keep in touch. Three of us video game together. The fourth spends to much time chasing women, getting married, and then divorced (he just filed for his third).