"Tabletop Simulator is the only simulator where you can let your aggression out by flipping the table!"
Unless you include Garry's Mod, use the physgun on a table and propkill your lover.
"There are no rules to follow"
Depends what you plan on doing really. Host won't be happy if you disallow castle-ing in chess.
"Just you, a physics sandbox, and your friends."
There is a singleplayer which is really fun if you love talking to figurines or reading a 2 hour rulebook to a new game.
"Make your own games"
VERY HARD TO DESIGN YOUR OWN ORIGINAL GAMES but it is really easy to make them once you know what to do.
"and play how YOU want!"
Unless the host is a terrible GM or plays with 50 house rules.
"Unlimited gaming possibilities!"
This game is gonna zoom past Gmod and TF2 and claim 1000 hours first.
BUY THIS GAME AND BE MY FRIEND (Because I'm lonely and want to show you some awesome games :c)