Flutter Bombs started as a study of environment and landscape development tools in UDK. As the environment evolved, a game started to take shape that involved the flight and travels of a butterfly. As I learned more about the engine (and eventually as UE4 arrived), it was quite natural to weaponize the butterfly.
The game quickly became an aerial combat experience with a heavily armed butterfly equipped for both air and ground based combat. This game also became a study in multi-platform game development. The PC version was a 6 DoF flying game, there was a mobile version that was a twin stick shooter, and we built a version in VR that was an on-rails experience.
We've now focused development on building out the twin-stick shooter for console with 4 player local co-op, 10 wingsets to unlock, and arena based procedural levels each of which have a unique environment.
After our launch on console, we hope to bring this version back onto the other platforms as well.