It'll never happen. Flash is a lightweight rich media format designed for rich media. Unity is a full blown 3d environment and is not lightweight and not 2d fri

It'll never happen. Flash is a lightweight rich media format designed for rich media. Unity is a full blown 3d environment and is not lightweight and not 2d friendly. That said, the only thing unity is really useful for is 3d applications, which are very limited. It's not going to replace Flash for 2d games.