D&D style games do multiple actions in one round, but outside the d20 world, I think it’s actually uncommon: CoC, Fate, PbtA, BRP, Numenéra, *Borg, whatever the system that Alien, Bladerunner and the other Free League games use, The One Ring, pretty much every Indie game I’ve ever played, Toon, Paranoia, Everway (I’m just running through my library here), Pendragon, Hillfolk, Gumshoe — I think it’s only 13th Age and PF2 in my library that require you to choose multiple actions within a round.
Suddenly blanking on Savage Worlds, despite having run 2 campaigns using it — does it break a player’s combat round into multiple actions? I don’t recall doing so, but maybe I was playing fast and loose with the rules.