Agumon memiliki digivolution alami untuk menjadi Greymon (Champion level), MetalGreymon (Ultimate level), dan WarGreymon (Mega level), masing-masing pada saat Agumon mencapai level 5, 20, dan 40. Untuk membuka digivolution lainnya harus memenuhi stats dan level tertentu. Berikut daftar digivolution Agumon dalam game Digimon World 3 NTSC dan Digimon World 2003 PAL.
Champion level:
- Angemon: Kabuterimon level 20, Intelligence 300
- Devimon: MagnaAngemon level 30, Dark 250
- Dinohumon: WarGreymon level 20
- ExVeemon: MetalGreymon level 30, Ice 320
- Greymon: Agumon level 5
- Grizzmon: MetalGarurumon level 30, Defense 400
- Growlmon: Greymon level 20
- Hookmon: WarGrowlmon level 30
- Kabuterimon: Stingmon level 50
- Kyubimon: MetalGreymon level 20, Spirit 300
- Stingmon: WarGreymon level 30, Speed 260
Ultimate level:
- Angewomon: MagnaAngemon level 20
- Armormon: Hookmon level 50
- Digitamamon: MetalGarurumon level 20
- GrapLeomon: Grizzmon level 50
- Kyukimon: Dinohumon level 50
- MagnaAngemon: Angemon level 50
- MetalGreymon: Agumon level 20
- MetalMamemon: WarGreymon level 10
- Myotismon: Devimon level 40
- Paildramon: ExVeemon dan Stingmon level 5
- SkullGreymon: Greymon level 50, Dark 130
- Taomon: Kyubimon level 40
- WarGrowlmon: Growlmon level 40, Agumon level 15
Mega level:
- Beelzemon: MaloMyotismon dan Gallantmon level 40
- BlackWarGreymon: SkullGreymon level 99
- Cannondramon: Armormon level 99
- Diaboromon: GranKuwagamon dan BlackWarGreymon level 99
- Gallantmon: WarGrowlmon level 99
- GranKuwagamon: Imperialdramon and Kabuterimon level 40
- GuardiAngemon: Kyukimon level 99
- Imperialdramon: Paildramon level 50
- Imperialdramon FM: Imperialdramon level 99
- Imperialdramon PM: Imperialdramon FM dan Omnimon level 40
- MaloMyotismon: Myotismon level 99
- Marsmon: GrapLeomon level 99
- MegaGargomon: MetalGarurumon level 99
- MetalGarurumon: MetalMamemon level 40
- Omnimon: WarGreymon dan MetalGarurumon level 40
- Pheonixmon: Rosemon level 99
- Rosemon: Angewomon level 40
- Sakuyamon: Taomon level 99
- Seraphimon: Magna Angemon level 99
- WarGreymon: Agumon level 40