Combat in any game could be potentially deadly.
D&D you could run into 3:1 odds or more enemies against you, or enemies resistant or immune to many of your attacks, or some enemy with a difficult weakness to find, or get caught fighting in a city you shouldn't be fighting in that has the death penalty, or an enemy with a 'special' attack you can't easily defend against, death traps in a combat zone... I keep thinking of ways to die in combat...
The key word is 'potentially', and it's a huge matter of degree. Challenge Ratings in D&D 3e went a long way toward reducing lethality due to DMs not understanding how tough monsters were and players not understanding how tough encounters were. The difference in potential between a 'Challenge Rating equal to Party Level' encounter in D&D and Traveller or Boot Hill (where -any- hit has about a 22% chance to instakill you) with little to no guidance on how to make encounters hard or easy, plus the flat Traveller health stats vs D&D's HP_per_level to pad characters, makes Traveller noticably more lethal than games like D&D (although not more lethal than the old Boot Hill, good grief!)
James Bond had many ways to die in a fight, and if you didn't have 'Hero Points' (I think that's what they were called) you could stay dead...
Was that the old game with percentile rolls and 'quality ratings' for degree of success? I had it when I was like 12, but never got to play it with anyone.
Star Wars and Traveller are somewhat similar, they both have many ways do die in combat. Characters are like low level D&D characters facing hordes of powerful enemies beyond their abilities to survive. Or fighting in an environment requiring Vacc suits or Environment Protection Suits and there is a puncture/rip/malfunction before the fight is over,...
Star Wars and Traveller are similar because they both feature combat in outer space, adding vacuum to the list of things that can kill you. If you're travelling in D&D and a troll hits your wagon with a club, you're not looking at instant death (again, depending on relative Challenge Rating, but at least not due to asphyxiation). I don't know if the newer Star Wars game has levels or CRs, the last Star Wars game I played was WEG, and it had
no particular balace mechanism other than the DM feeling fair or cruel.
True WEG story: my brash pilot was flying overwatch in a starfighter while party works on mission planetside. Planetary forces scramble TL7-ish fighters. Fighters fire missiles at me. I dodge with ease. Turns out they're firing nuclear cruise missiles (we were 16, how much did we know about nuclear weapons?) and I died anyhow. You know the expression 'close enough only counts in horseshoes and hand grenades'? The old addition '...and nuclear weapons' is a thing.
So my point is that game balance is entirely in the hands of the DM in -any- game, but games like D&D have a lot more guidance to prevent (or at least identify) encounters that will kill the party. Reducing accidental lethality goes a long way toward reducing the overall lethality of a game. Players starting a fight with 1HP left and other poor decisions can't be helped, but the
original premise in this thread:
... I don't really get this whole "deadly as Traveller Rules as written" meme that people keep saying:
is not taking into account the never scaling HP, or simply the randomness inherent in dice rolling. If you fight on long enough, one of your opponents will roll and 18 on 3d6 for damage. That's a catastrophic hit in Traveller (unless you're wearing Battle Dress), potentially even an insta-kill. So, if your party at level 5 is fighting a wizard and he hits you all with a fireball that gets lucky and rolls max damage, 30 points (for a 5d6 fireball), that's pretty lethal, sure. But a Level 5 Fighter with +2 Con bonuses has 44HP, so he's not dead by 14HP , even if he fails to make his saving roll. The rogue may be in trouble, but he takes 0 damage if he saves. And you're going to be taking a -ton- more 3d6 hits than fireballs, and 3d6 maxes out
far more often than 5d6.
There's danger in any game that features fighting, sure, but the point is, there's a fairly large gap in degree of risk.
The other point that this whole thread seems to have ignored is that in Traveller, you can
die in chargen. AFAIK, that's unique to Traveller, and definitely adds to the deadly as Traveller RAW feeling.