Create and Play bullet hell!
Very highly customizable bullet hell level editor.
Snap levels to a music to make it more interesting.
Load youtube video to stream music for the level.
Share levels using workshop in game.
Practice mode to play level from a specific point.
Replay mode to view your play.
..and some experimental features.

Minimum:
Requires a 64-bit processor and operating system
OS:
64bit Windows
Processor:
Dual Core CPU, 2.2Ghz, 64bit
Memory:
2 GB RAM
DirectX:
Version 9.0
Storage:
500 MB available space
Additional Notes:
Requires more cpu power if you want more bullets
Recommended:
Requires a 64-bit processor and operating system
OS:
Windows 8/10, 64bit
Processor:
Quad Core Cpu
Memory:
8 GB RAM
DirectX:
Version 11
Storage:
1 GB available space