Instead of looking for a tiny installer, download the full game and use "low-end PC" mods to lower graphical settings beyond what is allowed in the standard menu. Conclusion
No modern first-person shooter from 2009 or later can fit into 40 MB. That file size is smaller than a single high-resolution wallpaper. Instead of looking for a tiny installer, download
: The original Modern Warfare 2 (2009) requires roughly 12 GB of space, while the 2022 version can exceed 100 GB depending on the installed components. Compressing dozens of gigabytes of data into 40 MB is technically impossible without removing almost all the game's assets (textures, audio, and video). : The original Modern Warfare 2 (2009) requires
The skybox tore open. A giant QA tester’s face—pixelated, bored, eating a donut—looked down at him. The tester said: "You didn’t think we’d actually let you play, right? This build is missing textures 80–4,099. Also, the collision detection is a suggestion." A giant QA tester’s face—pixelated, bored, eating a
requires roughly of storage space, and the 2022 release of Modern Warfare II
A 40 MB file cannot hold the game's intro cinematic (which is over 100 MB alone). Even the game’s executable file ( iw4sp.exe ) is approximately 8-10 MB. That leaves 30 MB for everything else —maps, weapons, sounds, and models. It is mathematically impossible.