EMPCommand

This is a multitouch version of the old arcade classic Missile Command. Using limited ammunition, you defend your cities against incoming missiles. To launch a missile, simply touch the destination. Several players can cooperate to save the cities.

EMPCommand was written by OXullo Intersecans. It is Open Source and licensed under a BSD license. You can get the source code using

git clone https://github.com/libavg/mtc-emp_command.git

There is an Ubuntu package for EMPCommand.