A concise overview of the concept of highly compressed PPSSPP (PlayStation Portable emulator) game repacks targeting ~50 MB sizes: motivations, common techniques, technical trade-offs, legal/ethical considerations, and risks.
Sony released a line of "Minis" – smaller indie games. These are officially 20-50MB. No repack needed. Titles like Age of Zombies and Fieldrunners are fantastic.
Not every game compresses equally. High-definition 3D games struggle to hit 50 MB without losing quality. However, certain genres compress beautifully.