The small text in GTA IV was so irritating that I never completed the game. I got sick of getting up to go look at the map up-close.
Madpony, via Reddit

LOOK Devs if you absolutely must have tiny text for your mainstream aesthetics at least give us an OPTION of larger text sizes
cherryrae, via Twitter

Although setting a good default size is beneficial, there isn’t a single set size that everyone can read, due to differences in levels of visual impairments and differences in screen size or viewing distance. Although more difficult to implement, allowing players to choose a font size that best suits their abilities and situation is much more effective.

Best practice example: Warlock of Firetop Mountain
Best practice example: Dex
Best practice example: Final Fantasy XIII-2
Best practice example: EVE Online