Gacha Nebula appears to have 30 backgrounds in the latest update, based on the update notes and other public descriptions. A separate video also mentions 40 pages of backgrounds in the app overall, so the exact count depends on whether you mean the newest added backgrounds or the total background pages available.

Quick Scoop

  • New backgrounds in the Mega Update: 30.
  • Background pages shown in one comparison video: 40 pages.

What that means

If you’re asking about the latest added background pack , the clean answer is 30.

If you’re asking about the full background library/pages inside the app , one public comparison says 40 pages.

Short answer

For most people asking “how many backgrounds are there for Gacha Nebula,” the best answer is 30 new backgrounds in the latest update.

Information gathered from public forums or data available on the internet and portrayed here.