Either you socialize with the TU community, find playmates, notice you both like, I don't know, PAYDAY 2 and play a heist or two together because you both own that exemplary other game and want to play it.
Or, as it seems to me, you open up a suggestion thread to remake that game in TU. Along the lines of: "Why play Rocket League, MAGICKA PvP, HALO or Gmod when you could just play TU?" - TU is made to be a social experience but I don't think that means you can't, on occasion, take those people outside TU and just play that other game if you want.
Now I'm aware that the existing Minigames aren't completely and uniquely original. Virus is based on Timesplitters. Minigolf is a real life sport aged at least half a century. With this in mind I was conflicted if I should open up this thread or not. Would it be a useful thing to make up some Minigame Suggestion Guidelines? Are they already out there in the Search Function Jungle, buried in synonyms I wouldn't even think of checking? Would it be a wise move to just ignore those suggestions like all the other threads that ignore the Search Function? Is it not actually a problem because all I see is the failure rate as I cannot see the thousands of people just doing it right?