Amiga 500 to RGB CRT TV tiny screen!

[kiario]

Hello,
 
I connected my Amiga 500 to a CRT TV and play some games.
 
But the actual game area is so small and is nowhere from filling out the TV screen.
 
There is like almost 1/3 black area below the game screen and a tiny area above.
 
Guess its normal, but is there anything that can be done? I also have SNES and Megadrive connected and they fill the whole screen.
 
Perhaps mod Amiga to 60Hz but will my favorite game Captive run in that mode?

[kiario]

Overscan works with games? Workbench is ok but games that start directly have tiny screen

[kiario]

Heya folks,
 
Finally after two evenings got my pc and amiga connected and after much trial and error i finally got degrader running and 60Hz in games.
 
I am happy, much better size of screen now in games.
 
Thanks all for the help.