Any expansions or DLC count as being part of the base game.
'99 did not have as many high impact games as '98, but the overall quality might be just as high. Lots of strategy classics here plus the UT vs Q3 battle and MMOs going mainstream.
Edit: Shenmue was apparently 2000 in the west, but it stays in this list now.
Honorable mentions:
Dino Crisis
Sonic Adventure
Midtown Madness
Command & Conquer: Tiberian Sun
SimCity 3000
Total Annihilation: Kingdoms
Donkey Kong 64
Harvest Moon 64
Rayman 2: The Great Escape
Wipeout 3
Pokemon Snap
Omikron: The Nomad Soul
Crash Team Racing
Crazy Taxi
Mario Party
Tony Hawk’s Pro Skater
Syphon Filter
Descent 3
Ape Escape
Septerra Core
Kingpin: Life of Crime
Ultima IX: Ascension
Legacy of Kain: Soul Reaver
Star Ocean: The Second Story
Gabriel Knight 3
Tomb Raider: The Last Revelation
Jet Force Gemini
Star Trek: Birth of the Federation
Pharaoh
Might & Magic VII
Grandia
Driver
Worms: Armageddon
Star Wars Episode 1: Racer
'99 did not have as many high impact games as '98, but the overall quality might be just as high. Lots of strategy classics here plus the UT vs Q3 battle and MMOs going mainstream.
Edit: Shenmue was apparently 2000 in the west, but it stays in this list now.
Honorable mentions:
Dino Crisis
Sonic Adventure
Midtown Madness
Command & Conquer: Tiberian Sun
SimCity 3000
Total Annihilation: Kingdoms
Donkey Kong 64
Harvest Moon 64
Rayman 2: The Great Escape
Wipeout 3
Pokemon Snap
Omikron: The Nomad Soul
Crash Team Racing
Crazy Taxi
Mario Party
Tony Hawk’s Pro Skater
Syphon Filter
Descent 3
Ape Escape
Septerra Core
Kingpin: Life of Crime
Ultima IX: Ascension
Legacy of Kain: Soul Reaver
Star Ocean: The Second Story
Gabriel Knight 3
Tomb Raider: The Last Revelation
Jet Force Gemini
Star Trek: Birth of the Federation
Pharaoh
Might & Magic VII
Grandia
Driver
Worms: Armageddon
Star Wars Episode 1: Racer
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