Can You Download Fallout: New Vegas on PSP? Absolutely Not — Hardware Gap Unbridgeable

Absolutely not. The hardware gap is unbridgeable.

Spec	PSP (2004)	Fallout: New Vegas (2010) Min Specs
CPU	MIPS R4000 @ 333 MHz (Single Core)	Dual Core 2.0 GHz (x86)
RAM	32 MB (64 MB on 2000/3000)	2 GB (Win 7/10)
GPU	Sony 166 MHz (2 MB VRAM, Fixed Function)	Shader Model 3.0, 512 MB VRAM
Storage	UMD 1.8 GB / Memory Stick (32 GB max)	10 GB HDD
OS	Proprietary (No x86)	Windows x64

New Vegas uses **Gamebryo Engine** (x86, DirectX 9, Havok Physics, massive world data). PSP cannot execute x86 code, lacks RAM/VRAM by 100x, lacks shader hardware.

Portable Fallout Options (Real)

Fallout Shelter (iOS/Android/Switch/PC/Xbox/PS4): Vault management. Free. Touch/Controller.
Fallout 4 / 76 on Steam Deck / ROG Ally / Legion Go: Handheld PCs. Run full games natively. 30–60 FPS (4/76).
Fallout 1 & 2 (GOG/Steam): Run on *any* laptop/tablet (DOSBox/ScummVM). 2D Isometric. Deep RPG.
Cloud Gaming (GeForce Now / Xbox Cloud): Stream New Vegas / 4 / 76 to phone/tablet/weak laptop. Requires 25+ Mbps.
PSP Homebrew: Fallout 2 CE (Community port of Fallout 2 engine) — **Very early, buggy, not New Vegas.**

Don't waste time searching. Get a Steam Deck or use Cloud Gaming.

PSP Games