Duty Calls is a free downloadable PC game that parodies the Call of Duty series (and such war first-person shooters in general). It was released in February 2011 by Epic Games as part of a promotional campaign for Bulletstorm, a first-person shooter which was released on 22 February 2011.
Although the game installer is a bit over 700 MiB, it barely contains 4 minutes of gameplay (see full play-through video below).
- Windows XP SP2/Vista/Se7en
- 2 GHz single core CPU
- 512 MiB of RAM
- NVIDIA 6200+ or ATI Radeon 9600+ video card
- About 1 GiB of free hard disk space
Full play-through video: