If you like heavy strategy games based in historical events, you should take a look at the COIN series (COunterINsurgencies) by GMT http://www.gmtgames.com/. Actually, their whole catalog is full of great historical games, including the the highest-ranked game on BoardGameGeek for many years Twilight Struggle. They are definitely NOT party drinking games though, and require both time and dedicated study.

If you're looking for a 20min party game on the same vibe, I can't recommend The Resistance: Avalon highly enough. A more recent take on the hidden role and voting genre is Secret Hitler, but I didn't try that yet.

Links:

Twilight Struggle: https://boardgamegeek.com/boardgame/12333/twilight-struggle

Cuba Libre (COIN series): https://boardgamegeek.com/boardgame/111799/cuba-libre

Other COIN games: https://www.gmtgames.com/c-36-coin-series.aspx

The Resistance - Avalon: https://boardgamegeek.com/boardgame/128882/resistance-avalon