Thunderous Cacophony said:
Personally, I always assumed that medkits were foot-activated boxes of nanobots that spring to life, suture your wounds and pump you full of anesthetic, then drop to the ground, batteries and supplies expended. I don't care if nothing else in the setting would allow that, it's the only way I can think of them working in-universe.
So what about the original Call of Duty's flask and trauma kits?
In modern-esque military shooters, I've always seen them as a magical (or 'futuristic', if you prefer) universal blood transfusions with artificial clotting agents to seal old wounds. And I've always seen old games with life counters as if the protagonist is a clone, with a clone bank in a mobile laboratory and deployment vehicle that they bring to every theatre of operations.
That being said, I think one of the few games that did healing well is VtM: Bloodlines... precisely because you weren't a squishy human ... you were an undead monster with no discernibly working organs or cardiovascular system. Relying on regular intervals of oral blood infusion. So ... you know ... bullets did fuck all. Not like you need most of your organs intact if you're undead.
Of course, healing over seared or sliced flesh requires the blood of the living. Because of reasons ... which, just as magical as a videogame medikit, seem somehow a little less unreasonable a notion to believe. That and there is something piquant about getting the equivalent of a medikit by jumping onto a mortal and bleeding them to leave them in a state of near (or total, if you're a douche) hypovolemic shock.
Just don't get the same level of fun when you quaff a potion, or run over a medikit. I suppose it's a perfect example of making all elements of the game a gameplay mechanic.
That being said, I also like the Alice games of health rejuvenation ... this idea of 'meta-essence' as you cleave through the demons of your mind to recover not so much 'health', but maintaining your sanity in an insane world. Equally enjoyable, and that was simply a case of touching 'medikits' too ...