Always have 360-degree sonar blast by Galoob
Game Genie
A4KT-2A38
Eating fish does not heal at all (Most of the time) by Galoob
Game Genie
ADLA-WAD4
Eating fish heals 1/2x as much as usual (Most of the time) by Galoob
Game Genie
BDLA-WAD4
Eating fish heals 2x as much as usual (Most of the time) by Galoob
Game Genie
EDLA-WAD4
Eating fish heals Ecco completely (Most of the time) by Galoob
Game Genie
HDLA-WAD4
Ecco jumps much higher. by Tony Hedstrom
Game Genie
93BA-V95N
Ecco swims much faster when using the C button. by Tony Hedstrom
Game Genie
CC7A-TAB8
Ecco swims through rocks and barriers by pressing the B (Dash) button. by Tony Hedstrom
Game Genie
GB2A-TAA4
Infinite air by Galoob
Game Genie
AKZA-TA7A
Infinite Air by Parasyte
Raw
FFAA18:0400
Infinite Health by Parasyte
Raw
FFAA16:0040
Infinite health and air by Galoob
Game Genie
REAA-W6V0
Invincibility (Stars) by Hacc
Raw
FFAB6C:0258
No rings lost for missing gates in 3D stages by Galoob
Game Genie
ALBA-4A8R
No rings lost for shooting gates in 3D stages by Galoob
Game Genie
AKCT-4A7N
Pause the game and press A for Debug Menu by terpsfan101
Game Genie
BHFA-VN8J
RHFA-T604
Swimming in the air. by Chemist
Game Genie
RFDA-T60A
Swimming through walls. by Chemist
Game Genie
ACHT-TA7L