Bot Tower Defence (working title)

Well, I spent the last day or 2 thinking of ideas and have come up with the idea of a combination of Lemmings and a tower defence with the tower floor idea of Tiny Tower with the art style of the old Apogee games of the MSDos era :).

You can place a finite number of friendly bots which stop enemy bots in their tracks. You require to stop the enemies for a few seconds to drain their battery and cause them to die. Strategy of placement will be key as there will be multiple floors in a tower and you have limited friendly bots.

Would really appreciate feedback, cheers

Here is my first design drawing :