It's a blast from the past, until you forget to save your game.
Serious Sam HD: The Second Encounter hearkens back to the first person shooters of yesteryear. There's no real attempt at story, objectives aren't included, and players need only focus on killing everything in sight and moving on to the next room to do it again. Of course, the title is a remake of the 2002 game with the same name, this time with upgraded visuals and an additional mode, Co-Op Tournament. While many staples of modern day shooter design aren't present here, that doesn't mean it isn't an enjoyable romp.