Yes, It is entirely possible.
What you need:
- 2 gameboy colors or advances each with a copy of either gold or silver
- A link cable
- hands
Using the first copy of gold or silver, (the one your not doing the egglocke on) you will use the TM17 ACE glitch to get one Pokemon from every BREEDABLE evolution line
Deposit a ditto into the Pokemon daycare with each Pokemon individually until you get an egg for every single one
Get any Pokemon and give it a rare candy to hold
Start a new save file on the second copy of Pokemon gold or silver, and play normally until you get to the point where you can obtain pokeballs
On the second copy, catch any Pokemon and use the duplication glitch to make 108 copies of that Pokemon (one for each egg + the rare candy Pokemon)
Trade over all of the eggs + the rare candy Pokemon for the duplicated Pokemon
Pick a random egg, hatch it, then switch it out for your starter
Your egglocke has started!
Notes:
The rare candy Pokemon is used to reduce grinding. When you switch out a captured Pokemon for an egg, you can duplicate the rare candy Pokemon to get enough rare candies to make the level of the
pokemon hatched equal to the captured Pokemon
THIS WILL TAKE TIME!!! If you are patient and trust the process then the result is incredibly fun and rewarding
If you want, you can add your own rules to the egglocke to make it fun for you
If I left anything out or you have questions, comment and let me know!
The duplication glitch works the same for gold, silver, and crystal
This can not be done on a copy of crystal because (to my knowledge) the TM17 glitch can only be done in gold and silver
This can only be done on real carts because (to my knowledge) the link cable does not work for fake copies
If you want increased shiny egg odds then you can use the TM17 glitch to make the breeding ditto shiny for a 1/64 shiny chance!
source: I spent around 5 hours of my life doing this after having the idea
