What are some current free to play games on the Xbox 360 I know that games like Warface have been taken off?

The xbox 360 servers will be up for about 5 more years or so until Microsoft feels its time to chut them down

if you have Xbox Live Gold ($60 / year), you get two free games every month with games with gold program. cdkeys.com and some sites like eBay will sell codes less than the $60 for 12 months.

If you're in the US, start using this service - Microsoft has a search engine - Bing, along with their own browser - Edge. Between PC and mobile devices, you can earn rewards by searching everyday, up to 300 points a day. Xbox Live Gold for 12 months is one of many rewards you can earn through searching. it costs 30,000 points to earn 12 months of Xbox live gold. if you search every day, it'll take around three months to complete. if you search for the year, you can earn around 36 months of gold. either make sure the digital code won't expire, and print it out and save it. or, i believe you can add up to three years of total Xbox Live gold on your account.