n-Space is a video game developer that was founded in 1994 by Erick S. Dyke, Dan O'Leary and Sean Purcell. Although it has mostly done development for other video game companies, it has developed all Call of Duty video games for the Nintendo DS, starting from Call of Duty 4: Modern Warfare (DS).
In both Call of Duty: Modern Warfare (DS) and Call of Duty: Modern Warfare: Mobilized the n-Space logo is green, but in Call of Duty: World at War (DS) it is yellow. In Call of Duty: Black Ops (DS), the logo takes the form of a blue military-like patch on a green sleeve. In Call of Duty: Modern Warfare 3: Defiance.
n-space logo in Call of Duty: Black Ops (DS)
n-space logo in Call of Duty: Modern Warfare 3: Defiance