Monkey Fracas Jr. Portable? Uh hello, not worth it!
Going to your local Wink-E-Mart or Pizza Place and just playing the game there for 25 cents a game (And you can also buy some Slurm or something maybe a piece of coffee or box of pretzels, I dunno)
Buying an arcade console for yourself and putting it on free play. If it needs to be portable, just put it in the back of your pick-up truck. Hell, you could charge people to play and MAKE money that way!
Getting Donkey Kong on Game Boy, but you'll miss out on the color.
Getting Mario and Donkey Kong on Game Boy Advance, but you'll miss out on....hmm, the outdated graphics? I dunno.
Pros: The phrase "HOW HIGH CAN YOU GET?" is hilarious
Cons: Holy Buddha, Vishnu, and Jenova! EVERYTHING! Stay away, this game can probably give you AIDS.