I agree, Munchkin is awful. The game play is terrible and it really is just a vehicle for a bunch of sophomoric, silly gaming jokes, funny only to 15 year olds. I have no idea how Steve Jackson has made a business model out of that shit. Seemingly gone are the days of development of quirky but fun games like GURPS, Ogre "You Asshole", Car Wars and Illuminati. Now we have:
    Munchkin
        Munchkin 2 - Unnatural Axe
        Munchkin 3 - Clerical Errors
        Munchkin 3.5 - Clerical Errata
        Munchkin 4 - The Need For Steed
        Munchkin 5 - De-Ranged
        Munchkin 6 - Demented Dungeons
        Munchkin 7 – More Good Cards
    Star Munchkin
        Star Munchkin 2 – The Clown Wars
    Munchkin Fu
        Munchkin Fu 2 – Monky Business
    Munchkin Bites!
        Munchkin Bites! 2 – Pants Macabre
    Super Munchkin
        Super Munchkin 2 – The Narrow S Cape
    Munchkin Impossible
    Munchkin Cthulhu
        Munchkin Cthulhu 2 – Call of Cowthulhu
        Munchkin Cthulhu 3 – The Unspeakable Vault
    The Good, The Bad, and The Munchkin
    Munchkin Booty
        Munchkin Booty 2 - Jump The Shark
    Munchkin Blender
    Munchkin Zombies
        Munchkin Zombies 2 - Armed and Dangerous
    Munchkin Axe Cop
    Munchkin Dice
    Munchkin Miniatures
Yay fun... Not!
Nightfall was really fun. eLzar and I played a few times and the mechanics have a few good hooks. He had mentioned the iOS tutorial isn't very straight forward, but the game play isn't difficult. The hard part is getting your head wrapped around the peculiar "Chain" mechanism that is at the heart of the game. Once you get that, it is very simple to play.
D>M>