[conroy]

I would suggest Unity. They just announced 2D support for the upcoming 4.3 release. The free version can deploy to both Android and iOS, as well as desktop and web.

LibGDX is a good choice if you don't want to target iOS. They just switched to a brand new iOS backend that is still very young.

MonoGame is great for cross-platform, but parts of the build process are still Windows-only.

[sprintf]

I wonder what 2D game developers are using in practice -- although these have been around a while, they sound like they're still gaining traction on the cross-platform story.

I'm on Windows, so a Windows-only build process is ok.

Thanks for the reply.