XCOM really is the game that is the perfect example of player choice mattering in my opinion. During an EXALT mission, for example, my Sniper who went on to be the backbone of my entire team (and my personal favorite squad member, the dude never missed and I had turned on almost all of the second wave options so he was one of a kind. He was from Sweden and I had decided to give him the nickname "Ragnar" after Ragnar Lodbrok,) and the Heavy (A Chinese Heavy who went by the nickname of "Brick", guy was gunning down mutons left and right and managed to survive a berserker giving him a high five) who I had since the first mission were both pinned down by a group of Alien sympathizers and I didn't think they were gonna make it through. I was losing my shit, man. Those were my golden boys, got damn it! Without them the squad's done for; My Indian sniper who had earned the Nicknamed "Lowrider" for some reason could not replace my awesome Swedish Viking Sniper, damnit! He had an aim over 100 before slapping on a scope, a will in the high 80s, and the guy literally never missed a god damn shot! He was a badass Viking in the modern era! The Aliens probably told stories about this crazy Swedish mother fucker, talking about how Ragnar Lodbrok rose from the dead and managed to get a scoped rifle, then started picking off their forces left and right.I could not lose these two guys. For fuck's sake, these two survived Newfoundland!
Then it hit me. I could sacrifice the rookie I had brought along so save them. An Australian by the name of Jack. He was destined for greatness. He could've been another "Ragnar". But he gave his life so others may live.
He was right next to the bastards. They were all under the convenience store's gas station, so a single spark could set the pumps off. With what I imagined the fury of a thousand proud Australians in his eyes, Jack pulled the pin and threw a grenade. The EXALT forces beside him went up in an astonishing display of fire, and with them the rookie known only as Jack Robinson had gave his life so that Ragnar and Brick could go on to defeat the greatest threat humanity had ever known.
Everyone on the mission had no idea what his last words were. But some liked to think that they were "Here's a piece of alien technology for ya, you ET-sympathizing bastards!"
Though he had passed on that day, he would not be forgotten. He would forever be immortalized by XCOM HQ. To this day the RK. Robinson Medal of Honor is still used to honor soldiers who went above the line of duty in their services against Mankind's greatest foe. The two men whose lives were saved they day awarded him the medal posthumously, and would forever be indebt to the man who bought their farm so they could stop the alien menace.