Yes it is fireworks!
Massive kudos to viniciuspac, the first to guess it is fireworks. I don’t know how he (or she) did it, but there you go. Congratulations!
Here’s a video for you showing some fireworks in action:
There are 256 variants of fireworks.
8 different burst shapes:
- Small burst
- Large burst
- Short trails
- Long trails
- Flat trails
Plus 2 altitude variants (low and high) and additionally any firework can be made flickering.
As usual, I am going to publish 1.28 for testing on Google Play first. This time I will only publish DEMO version. The full version will stay at 1.27 until bugs are ironed out.