Mario classic on GBA.
This is a port from the old SNES version to the GBA. The graphics are the same, though seem to have a more polished feel. Sound is that same chirp that you will hear hours after you play. The gameplay is simple though invokes all your attention to get through. Finding all the star roads, secrets, etc. is what hardcore gamers will enjoy and the simple Yoshi/Mario(or Luigi) team up is what even the youngest gamer will enjoy.
Multiplayer allows you and a friend to play as Mario and Luigi to help speed through the game twice as fast, or for you to do it at the same speed and make fun of your friend for being a miserable excuse for a gamer.
Adults, pick this game up to play while waiting for anything or while in the bathroom. Parents, grab the game for your child so they can grow up with the Mario we all did, not the DDR future of him with a cast vaster than Cheers. You can probably get it for less than $30 for a million dollars worth of game.