[Android Central Question]

I need to uninstall updates because tAblet keeps crashing on all my games

[B. Diddy]

Welcome to Android Central! Which tablet? Are you trying to uninstall updates to the games or a system update? You generally can't roll back system updates -- this would require flashing a copy of the previous firmware, which is somewhat easy on Samsung devices, but fairly difficult on other devices, since it would require rooting.

You also can't uninstall updates to an app unless the app was preinstalled on the device. The only way to get a previous version of an app would be to find the apk installer file on the web, but this can be risky, since there's a greater chance of malware on those sites.