I just got Botanicula. When I unzip it, there is just a
.air file. What do I do now?
You need to install the Adobe AIR Runtime before you can install the game.
The latest version for Linux is 2.6. Note that additional steps are required if you are running a 64-bit system, Ubuntu 12.04, or both. Instructions are included in the link above.
Once Adobe AIR is installed, double-click the
(For detailed discussion of this procedure see http://amanita-design.net/forum/index.php/topic,3729.0.html - includes additional links, and instructions for other Linuxes.)