Among us has a few different game modes and people can make their own game modes. You can have up to 15 players at once to play or you can have 5 minimum.
I have never really played among us so it was all new to me but I am willing to play it again with friends since it was so much fun.
The game is not free so you will have to pay for it. It is on sale on steam until January 5th and is on Epic. It is also on xbox game pass which is nice so if you have the pass you get it for free.