Carradice: About having a degree of uncertainty when dedicating resources to influence regions, it is no different from other games when the result depends on odds. In this case, the developers added this very gamey detail of showing the odds openly, in order to help the player figure out the possible effect. Games like Star Wars: Rebellion never showed the odds when you sent characters in missions: one was to figure out.
There is so much real gambling-like stuff in modern games (loot boxes, etc) that calling anything without a sure result "gambling" misrepresents a game profoundly. So everytime you shoot in XCOM without a 100% sure result you are "gambling"?. I do not get it. I guess some people like to use the word in order to throw shadow over games.
Lesser Blight Elemental: Spending resources on an activity that may or may not pay off is gambling by my definition. Referring to game mechanics, I could just call it RNG but I want to distinguish from the kind of RNG that the player is not actively involved in (e.g. procedurally generated characters, timing and composition of enemy spawns, etc.). I'm okay with the latter as long as it evens out to make for a playable game every time.
But when the game makes me roll the dice to determine whether my most basic, required actions succeed at all... yeah, I'm not okay with that. I don't like it in classic games either, even though I grew up with them. The changes to the combat system in Civ 5 were the best thing to ever happen to that series. Unfortunately western RPGs/strategy games that eschew that kind of RNG are pretty rare.
So when a character in UFO or XCOM shoots, it is all gambling for your definition. That is what I wanted to make clear. Obviously that is a very personal definition, to say the least. If we are not to misguide others and misrepresent and throw shade over this game, we would say that one prefers games without any random element involved in the result of an action taken by the player.
On the other hand, a number of players would not buy a game that is clearly offered as not finished, then publicly complain that the game is not finished and ask for a refund (not that GOG rules forbid that). Different views, possibly.