alien campaign is very hard i can't beat it because the human guys have adrenaline boost and the robots have extra health and the zombie teammates are useless
search bars on user content will never exist as kongregate's user content thing does not allow searching. it is out of the dev's control. i have asked the same question years ago and that was the response. @BlackWolf720
Apparently, whenever i play this on firefox, a bunch of spyware stars lagging my game. And when I am on Chrome, I can't load user created stuff. You win, game, you win.
Found a fix for the not loading white screen i think: go to "plugins" (the lego brick by the tabs), click "unity web player", and set it to "allow and remember". I'm on firefox btw. Hope this helps!
If the game doesn't work because of a "fatal content error" download firefox. If you have firefox already and it doesn't work, set the unity plugin to "always active". You may have to go onto a different game like i did.