"Bullet Sky" is a cross-platform flight shooting game created and developed by 1mpact Games. Applying Adobe Stage 3D and AIR (Adobe Integrated Runtime) related graphic acceleration technologies, we bring gaming experience in such kind to a whole new level. By optimizing the Stage 3D's APIs, we succeeded in breaking the bottleneck of Flash game performance and maximizing the graphic acceleration while largely saving the required system resources. Such practice not only contributes to a much smoother user experience, but also results in a smooth development process. Meanwhile,the integration with AIR enables an effortless transplant process to platforms such as iOS, Android, etc..