There is a total of 99 Yaya Cubes in the game. All 99 are required for the trophy
There are no in-game counter to show you where the Yaya Cubes are located. They can only be found in the 4 Memorias – Alabasta, Water Seven, Marineford and Dressrosa. You can collect all Cubes around Chapter 8. I recommend that you follow the video below as you progress through the different areas, or at least note how many you have picked up in that specifc area – this can help you keep track of which you have missed or still need to collect.
You can travel to each Memoria by talking to Lim in Waford South after defeating the Final Boss.
All 99 Yaya Cubes Overview
Alabasta: Nanohana
Yaya Cube 1
Yaya Cube 2
Yaya Cube 3
Yaya Cube 4
Yaya Cube 5
Alabasta: Desert Near Nanohana
Yaya Cube 6
Yaya Cube 7
Yaya Cube 8
Yaya Cube 9
Alabasta: Great Sandy Desert
Yaya Cube 10
Yaya Cube 11
Yaya Cube 12
Yaya Cube 13
Alabasta: Desert Cave
Yaya Cube 14
Yaya Cube 15
Yaya Cube 16
Yaya Cube 17
Alabasta: Desert Near Alubarna
Yaya Cube 18
Yaya Cube 19
Yaya Cube 20
Yaya Cube 21
Alabasta: Alubarna
Yaya Cube 22
Yaya Cube 23
Yaya Cube 24
Yaya Cube 25
Yaya Cube 26
Alabasta: Alubarna Royal Mausoleum
Yaya Cube 27
Yaya Cube 28
Yaya Cube 29
Yaya Cube 30
Water Seven: Water Seven Lower Coast
Yaya Cube 31
Yaya Cube 32
Water Seven: Water Seven City Area
Yaya Cube 33
Yaya Cube 34
Yaya Cube 35
Yaya Cube 36
Yaya Cube 37
Yaya Cube 38
Yaya Cube 39
Yaya Cube 40
Yaya Cube 41
Yaya Cube 42
Yaya Cube 43
Yaya Cube 44
Yaya Cube 45
Yaya Cube 46
Yaya Cube 47
Yaya Cube 48
Yaya Cube 49
Yaya Cube 50
Yaya Cube 51
Water Seven: Dock One
Yaya Cube 52
Yaya Cube 53
Yaya Cube 54
Yaya Cube 55
Yaya Cube 56
Yaya Cube 57
Yaya Cube 58
Water Seven: Sewer
Yaya Cube 59
Water Seven: Tower of Law
Yaya Cube 60
Yaya Cube 61
Yaya Cube 62
Yaya Cube 63
Marineford: Marineford City Area
Yaya Cube 64
Yaya Cube 65
Yaya Cube 66
Dressrosa: Dressrosa City Area
Yaya Cube 67-68
Yaya Cube 69
Yaya Cube 70-71
Yaya Cube 72
Yaya Cube 73
Yaya Cube 74
Yaya Cube 75
Yaya Cube 76
Yaya Cube 77
Yaya Cube 78
Yaya Cube 79
Yaya Cube 80
Yaya Cube 81
Yaya Cube 82
Yaya Cube 83
Yaya Cube 84
Yaya Cube 85
Yaya Cube 86
Yaya Cube 87
Yaya Cube 88
Yaya Cube 89
Yaya Cube 90
Yaya Cube 91
Yaya Cube 92
Dressrosa: New Royal Plateau Bottom
Yaya Cube 93-94
Yaya Cube 95
Yaya Cube 96
Yaya Cube 97
Dressrosa: New Royal Plateau Top
Yaya Cube 98
Yaya Cube 99