I recently downloaded a freeware game as a .zip file from AcidPlay.com. I’ve had some bad experiences with their games before (freeware can be scary… 
) so I had it scanned with VirusTotal. It said that the file contans a Trojan. How can I remove it so I can play my game?
Downloading some free file from internet are easy to get the virus files. Seldom downloading free ones are better. If now in this case, you can use the tool like wopti utilities to help you check it out and delete it off your PC. See this guide: http://www.spy-cleaner.com/remove_spyware.html
It is probably a crack. Delete the zip and do not download cracked software, especially from torrents and P2P.