Gameboy. Essential Gaming.

Hi kids! Do you remember the gameboy? Yes, that bulky grey beast. Let me tell you youngins a story from my childhood.

Actually, I'm thinking of picking up a gameboy for some oldschool gaming out in the sun and need some tips for games. Essential games for gameboy.

I'm already planing to get the following: Tetris, Zelda: Link's awakening and Mystic Quest, if I can find it. I have my eye on Wario Land too but I can't recall if it was any good. I'm pretty sure I'm missing a bunch of great games so help me out!

I'm mostly scouring a relatively small auction site so it's hard to find all titles but I've got a nice list going. So far I've found the following.

Super Mario Land 2
Zelda: Link's Awakening
Tetris
Kid Icarus
Kirby's Dreamland
Warioland
Mystic Quest
I'll probably pick up Pokemon, Mario Picross, one of the Megamans and possibly one of the Donkey Kong Land games, they should be decent atleast

I'm a bit unsure about Castlevania Adventure, Double Dragon and Duck Tales.

The games that can't be found right now will rpobably turn up sooner or later but this should last me a while. Thanks for all the recommendations so far!