Self-imposed challenges are the
poor creative man's way of getting replayability out of a video game. Back in the day there weren't many good or easily attainable free games, and it's a trait that's highly sought after in modern titles which generally back away from the Nintendo Hard difficulty of the old NES days.
What
is a SIC exactly? Here's the TV Tropes definition:
A Self-Imposed Challenge is a playthrough of a game wherein the player plays under a restriction not required by the game itself in an attempt to increase the difficulty (or immersion) and replay value.
Even if there's an in-game reward for the challenge, as long as the game itself isn't holding you to the restrictions, it's a SIC!
This is a place to discuss and brag about SICs you've started or done, and maybe even to propose and organize group challenges to see who can win first!!
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I've completed FOXHOUND/Big Boss Extreme (BBE) runs of all the main Metal Gear Solid games except 3. It involves completing the game within a certain time limit, on the hardest difficulty, without being spotted, killing any enemies (including bosses), using any healing or special items, and a limit on saves. I've done MGS1 once, MGS2 twice and MGS4 once, I've made short attempts over the years on MGS3 but I always get bored and quit. -.-
I've also completed two SL1 playthroughs of Dark Souls (beat the game without leveling up).