To be fair, Civilization was a boardgame before it was a videogame [https://en.wikipedia.org/wiki/Civilization_(1980_board_game)], only to get re-released as "Sid Meier's Civilization: The Boardgame" afterwards. It sure as hell can easily take more than 2-4 hours though, during the endgame the turns slow down to a crawl because there's a ton of stuff to keep track off.
Also, I can confirm that the Portal and XCOM games are the tits. Notably the XCOM one, the real-time element really makes that game but good lord is it hard.