Just crafted a phaser beam array and [over] is one of the stats on the weapon. What does it mean? I also just crafted one that says [pen] which I guess is penetrating. Is there a guide to what all the different [] abilities are?
Over means that there is a chance that the beam will get a free Beam Overload any time you attack without needing to have a Boff use the Beam Overload skill (this should be listed in the weapon's tooltip). Pen is indeed extra penetration against enemy resists.
There isn't really a comprehensive list, unfortunately. The devs haven't seen fit to give us an info dump on what all of the special crafted [mods] do. There's an incomplete list here: http://sto.gamepedia.com/Modifier
Nitpicking is a time-honored tradition of science fiction. Asking your readers not to worry about the "little things" is like asking a dog not to sniff at people's crotches. If there's something that appears to violate natural laws, then you can expect someone's going to point it out. That's just the way things are.
combat log said its beam overload I, and a 2.5% chance is pretty meh. Maybe if you have a carrier and 4-5 of them with not extra tac abilities abord, it can make sense, otherwise...not really.
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There isn't really a comprehensive list, unfortunately. The devs haven't seen fit to give us an info dump on what all of the special crafted [mods] do. There's an incomplete list here: http://sto.gamepedia.com/Modifier
Joined January 2009