NimbleBit, the very small indie studio behind the wonderfully conceived mobile game Tiny Tower, are cranky. Zynga, the very large social games studio, is about to release what is essentially a direct copy of Tiny Tower on iOS devices.

NimbleBit’s lead, Ian Marsh, took to Twitter to post the lovely letter you see in full below. Enjoy.

Click the image to enlarge it…

I’m skipping Dream Heights, are you?

[via Twitter]