As a completely different concept but along the same vein, I'd love to see a game where the hero (and that word is used loosely here) spontaneously impregnates the nearest female (of the same species) when he/she dies. After a vivid rapid pregnancy scene, he/she is either born normally (perhaps as a mass of flesh or an egg or something) and grows to adulthood within a few seconds, or grows to adulthood and bursts from the hapless NPC. It might not be the nearest female- perhaps only certain ones are even eligible as hosts for this 'rebirth'. 'Time of month', sterility, existing precautions (birth control?), and the like might have something to do with it. Perhaps the female has a chance to resist the effect.
It can actually be a tactical advantage- for example, as a way to break into an all-female prison or Amazonian Island. It probably wouldn't be useful as a surprise attack unless the woman is solitary- it would take too long and leave the character vulnerable for too long. Of course, all 'power-ups', 'items' and the like would be gone, as the hero essentially has a new body. This does make for an interesting tactic in that the hero has a specific reason NOT to hurt/kill his/her female enemies- they are his/her insurance policies.
Possible ways I see this used:
Perhaps the hero must find willing hosts for 'rebirth'. Essentially, they become a 'save point', usable once.
Perhaps the hero must physically move his 'essence' (seen as a mote of light, perhaps?) to find a suitable host that fails to resist the effect within a certain time limit, or he/she perishes for good(GAME OVER).
Perhaps the hero randomly jumps to the nearest female host, even if it puts the character at a significant disadvantage in the level.
This would work if the hero is a demon or alien, perhaps. Or if the programmer is really messed up in the head
Hey, even better, maybe have a toxic slime girl eat our remains and then respawn us?
