Recored games by using hypercam without being so laggy when i play back the recored game?

reduce the compression quality and frame rate and it would make the game runs normal but mostly depends how much your pc can handle

how much compression quality and frame rate should I reduce to what number?

what's you compression rate and frame rate?

its defaulted. also is there any other free screen recorder for video game besides fraps?

You can use CamStudio. It can record not only games, but anything you have on screen. It's opensource, so it's free too. (And it works very well, too)

Here's the link: http://camstudio.org/