If your storage is extremely tight, these titles are even smaller but pack a punch:
Note: This review covers widely circulated, highly compressed PlayStation 2 game images (commonly called "PS2 rips" or compressed ISOs) that are trimmed to under 500 MB for easier download and storage. Compressed builds often reduce quality (audio, video, cutscene removal, or lower bitrate) and may break some features; treat these versions as space-optimized alternatives rather than replacements for original discs.
Fighting games are usually the smallest files on the PS2 because they only need to load two characters and one arena at a time.