Ah ok good to hear. Some games got huge readmes, but I think screenshots are self-explanatory. If they aren,t enough or if they're large, then just quickly explain what is the game and the controls and if necessary, how to run the game and you can even put an Omni/Cemetech link in it. Otherwise you can put the instructions in the description.
For the games with many options, it might be best to have a larger readme, tho.