alternatehistory.com

January Releases

Marvel Vs. Capcom: Clash of Super Heroes (Arcade)
Resident Evil 2 (PS1)
Panzer Dragoon Saga (Saturn)

February Releases

Xenogears (Ultra NES)
Gex: Enter the Gecko (PS1)
X-Men vs. Street Fighter: EX Edition (PS1)

March Releases

Real Bout Fatal Fury 2: The Newcomers (Arcade)
Need for Speed III: Hot Pursuit (PS1)
The House of the Dead (Saturn)
The King of Fighters '97 (Saturn)
Tekken 3 (PS1)
Parasite Eve (PS1)
Blasto (Ultra NES)
StarCraft (Windows)

April Releases

Ultra Bomberman Hero (Ultra NES)

May Releases

Jazz Jackrabbit 2 (Windows)
Unreal (Windows)

June Releases

Banjo-Kazooie (Ultra NES)

July Releases

WWF War Zone (PS1)
Heart of Darkness (PS1)
Star Ocean: The Second Story (Saturn)

August Releases

Pokemon Stadium (Ultra NES)
Resident Evil: Director's Cut (PS1)
Tom Clancy's Rainbow Six (Win)

September Releases

Metal Gear Solid (Ultra NES/PS1)
Spyro the Dragon (PS1)
Pokemon Yellow (Gameboy)
Suikoden (Saturn)
Dragon Quest Monsters (Pluto)
Body Harvest (Ultra NES)

October Releases

MediEvil (PS1)
Fallout 2 (Windows)
Grim Fandango (Windows)
Crash Bandicoot: Warped (PS1)

November Releases

Half-Life (Windows)
Tomb Raider III (PS1/Windows)
The Legend of Zelda: Ocarina of Time (Ultra NES)
Blood II: The Chosen (Windows)

December Releases

Thief: The Dark Project (Windows)
Star Wars: Rogue Squadron (Windows)
Hey You, Pikachu! (Ultra NES)
The Legend of Zelda: Link's Awakening DX (Gameboy Color)
Suikoden II (Saturn/PS1)
Mario Party (Ultra NES)
Pokemon Trading Card Game (Gameboy Color)
Baldur's Gate (Windows)
South Park (Ultra NES)
Sonic Adventure (Saturn)

So, because of Wikipedia's weird choice to change formats for 1998 only (though there may be other pages that do it,) I opted for a post of notable releases for each of the major consoles. We're not discontinuing the Saturn yet, so Sonic Adventure gets made for the Saturn. As you can imagine, there's probably some additions for Ocarina (the Water Temple is definitely fixed overall) and it's the big game for Nintendo in 1998, possibly making Link more the Nintendo mascot going forward coming off the successful movie trilogy and Mario 4's failure at the box office. Ganondorf in the game draws more heavily from Christopher Lambert's appearance and is detached from the Gerudo as a race and is more in line with the movie's version (in games, he's a disgraced knight of the Hylian army or a traitor with the full name Ganondorf Dragmire/Dragomir depending on the region.)

Oh yeah, and Metal Gear Solid goes to the Ultra NES, so how about that?