★★★★ Battle Piece Leveling
Four star units and leaders require the fewest amount of both G-tokens and Battle Pieces compared to others. However, due to the rarity of acquiring those pieces, they are generally the hardest to level up. Thankfully a G-material item was introduced to help make this process easier.
Level |
G-token Cost |
Battle Pieces |
Unit Stat Growth |
Leader Growth |
2 |
1750 |
1 |
+30% |
+15% |
3 |
1750 |
1 |
+30% |
+12% |
4 |
1750 |
1 |
+30% |
+10% |
5 |
1750 |
1 |
+30% |
+9% |
6 |
3500 |
1 |
+3% |
+1% |
7 |
3500 |
1 |
+3% |
+1% |
8 |
3500 |
1 |
+3% |
+1% |
9 |
3500 |
1 |
+3% |
+1% |
10 |
3500 |
1 |
+3% |
+1% |
11 |
6300 |
1 |
+1% |
+0.5% |
12 |
6300 |
1 |
+1% |
+0.5% |
13 |
6300 |
1 |
+1% |
+0.5% |
14 |
6300 |
1 |
+1% |
+0.5% |
15 |
6300 |
1 |
+1% |
+0.5% |
16 |
6300 |
2 |
+1% |
+0.5% |
17 |
6300 |
2 |
+1% |
+0.5% |
18 |
6300 |
2 |
+1% |
+0.5% |
19 |
6300 |
2 |
+1% |
+0.5% |
20 |
6300 |
2 |
+1% |
+0.5% |
21 |
14000 |
3 |
+2% |
+2% |
22 |
14000 |
3 |
+2% |
+2% |
23 |
14000 |
3 |
+2% |
+2% |
24 |
14000 |
4 |
+2% |
+2% |
25 |
14000 |
4 |
+2% |
+2% |
26 |
17500 |
4 |
+2% |
+2% |
27 |
17500 |
5 |
+2% |
+2% |
28 |
17500 |
5 |
+2% |
+2% |
29 |
17500 |
6 |
+2% |
+2% |
30 |
17500 |
6 |
+2% |
+2% |
31 |
30000 |
7 |
+0.5% |
+0.5% |
32 |
30000 |
7 |
+0.5% |
+0.5% |
33 |
30000 |
8 |
+0.5% |
+0.5% |
34 |
30000 |
8 |
+0.5% |
+0.5% |
35 |
30000 |
9 |
+0.5% |
+0.5% |
36 |
35000 |
9 |
+0.5% |
+0.5% |
37 |
35000 |
10 |
+0.5% |
+0.5% |
38 |
35000 |
10 |
+0.5% |
+0.5% |
39 |
35000 |
11 |
+0.5% |
+0.5% |
40 |
35000 |
12 |
+0.5% |
+0.5% |
|
With version 1.4.8, a 4★ Upgrade G-material item was released.

This rare material can be used to replace a missing battle piece for upgrading these ★★★★ units. That said, you must have the required battle pieces and upgrade materials to use them. For example, if your King Ghidorah 1991 is at level 15 it would require having 2 battle pieces already along with a 4★ Upgrade G-material in order to level him up. If you only had one battle piece you would be unable to use the upgrade material.
Also to note is that using the G-material item don't immediately count as acquiring a new battle piece for the sake of achievements. For example, if you had 21 battle pieces before upgrading using three G-material your achievement would still show as 21. For them to count you need to acquire a battle piece in another means, such as in an expedition map, at which point the game will re-tabulate and count prior uses of G-material as earning a piece. |