The Pokemon Omega Ruby title screen.
Pokemon Omega Ruby and Alpha Sapphire owned by Nintendo.
Images used for educational purposes only.
Released in 2014 but spiritually belonging to 2002, Pokemon Omega Ruby and Alpha Sapphire are remakes of Pokemon Ruby, Sapphire, and Emerald for the GameBoy Advance. Enhanced for the Nintendo 3DS with full 3D graphics, additional storyline, and pokemon from subsequent generations, Omega Ruby and Alpha Sapphire nevertheless heavily draw from the classic games with a near-identical world, confrontations with old foes, and a never-ending battle to become the champion of the Hoenn region.

In other words, they're Pokemon games. Take 'em or leave 'em, 'cause that's what you're gonna get.

At the moment this in-progress walkthrough for Omega Ruby and Alpha Sapphire (which draws more heavily from Omega Ruby, since that's the one I own, though I'm researching the other game while playing Omega Ruby) is split between ArrPeeGeeZ and I'm still deciding which site is more worthy of hosting the walkthrough. Consequently, the first eight links in this walkthrough will take you away from ArrPeeGeeZ for the foreseeable future.

Main Walkthrough

Part One: Choosing a Starter
Part Two: Route 102 and Petalburg City
Part Three: Route 104 and Petalburg Woods
Part Four: Rustboro City
Part Five: Route 116
Part Six: Dewford Town
Part Seven: Granite Cave and Route 109
Part Eight: Slateport City
Part Nine: Route 110
Part Ten: Mauville City
Part Eleven: Mauville Pokemon Gym
Part Twelve: Route 117 and Route 118
Part Thirteen: Route 111, Route 112, and Fiery Path
Part Fourteen: Route 113 and Fallarbor Town
Part Fifteen: Route 114, Meteor Falls, and Route 115
Part Sixteen: Mt. Chimney and Jagged Pass
Part Seventeen: Lavaridge Town and Lavaridge Pokemon Gym
Part Eighteen: Route 111 Desert
Part Nineteen: Petalburg Pokemon Gym
Part Twenty: Route 105 to Route 109
Part Twenty-One: Route 118, Southern Island, and Route 123
Part Twenty-Two: Route 119 and the Weather Institute
Part Twenty-Three: Fortree City and Route 120
Part Twenty-Four: Fortree Pokemon Gym
Part Twenty-Five: Route 120 and Route 121
Part Twenty-Six: Lilycove City
Part Twenty-Seven: Mt. Pyre
Part Twenty-Eight: Team Magma / Aqua Hideout
Part Twenty-Nine: Mossdeep City and Mossdeep Pokemon Gym
Part Thirty: Route 124 to Route 128
Part Thirty-One: Seafloor Cavern
Part Thirty-Two: Cave of Origin and Sootopolis
Part Thirty-Three: Sootopolis Pokemon Gym
Part Thirty-Four: Victory Road
Part Thirty-Five: The Elite Four and the Champion
Part Thirty-Six: Delta Episode
Part Thirty-Seven: S.S. Tidal
Part Thirty-Eight: Battle Resort

Side Areas

Mauville Hills and New Mauville
The Regis
Route 129 to Route 134
Safari Zone
Scorched Slab
Sea Mauville
Shoal Cave
Trick House

Miscellaneous Stuff

Legendary Pokemon Locations
Mega Stone Locations
National DexNav Pokemon
Super Training
TM and HM Locations