But as any seasoned emulator veteran will tell you, chasing the 50MB dragon is usually a path to disappointment. Here is the reality of what you are actually downloading.
Even if you find a legitimate, heavily stripped-down game (like a 50MB version of Need for Speed with no music and potato-quality textures), the performance on PPSSPP (the PSP emulator) might actually be worse than the full version. Highly Compressed Ppsspp Games Under 50mb For Android