These games are verified to be small in size and offer excellent gameplay.
This puzzle classic translates perfectly to the PSP. You must guide tiny green-haired creatures to the exit using unique abilities (builder, blocker, bomber). The graphics are simple 2D, which allows for incredible compression. The soundtrack is catchy, but the ripped version removes the music videos, leaving the core 150+ puzzles intact.
Let’s do the math. The average game in our list is 40MB.
Here is a "Power Pack" list of 10 games under 50MB to fill your card right now:
Total space used: ~355MB.