Well, there are some windows only games, that i could also say "no .bin" (even tough there are no "extensions" in linux), but in your case (game being linux only), you can download for example linux mint and test it in virtualbox :)
It would be OK to upload a windows build after the deadline. Just as long as it doesn't contain content or game-play changes. Even bug fixes are OK to post afterwards. Just FYI. Not like we don't have the source :)
