OMG they remastered Chex Quest!!
This is the first FPS I cut my teeth on, dialing in the muscle memory and coordination to look/move around with the standard kb/m control scheme.
It came in a CD in Chex cereals in 1996 (or that’s when I got mine), where they had some studio make a kid-friendly Doom mod with a cheesy story where the character is a piece of Chex cereal. They made a 2 and 3, but those were hard to find and even harder to make work until years later, the devs (out of their love for the game I think) polished them all up into a single file that runs properly on modern versions of Windows (where previously we had to load .WAD files manually in a Doom emulator and other funny workarounds).
They’re bringing it back in what appears to be the UE4 engine, but themed around the snack mix instead of the cereal. The intro movie and maps appear to be the exact same storyline/builds as before (even the lines and music are the same though redone). I’m in heaven, except the keyboard controls aren’t mappable. WHAT IS THAT? I mean, I’ll download and run Autohotkey to fake the correct keystrokes to the game, but who does that in a modern game? This isn’t even a console port.
I do look on this with a fondness unrivaled among other video games in my youth, but I truly think the voice acting from the original intro video is way funnier for how serious it is. When she says, “we need a volunteer”, she’s so dramatic and serious, and Chexguy is all Buzz Lightyear. 
Seriously though, if you can get past the keyboard mapping, it’s free on Steam, and it’s a treat. This is the singular ad campaign that I endorse - I buy and eat Chex products because I have a soft spot for this game (and they’re pretty good too).