Dungeoneering does not have to be done in groups. I have done it solo many times. I don't see this is a real issue, at least not for me. The new skill is EXACTLY like a mini-game/activity. Slayer is not like an activity because you get xp for each and every monster kill during each assignment, not getting all of your slayer xp at the end of the entire assignment (that would make Slayer like a mini-game activity, but it's not even close). With Dungeoneering, you only get xp after completion of each instance. Again, this makes Dungeonerring EXACTLY like a mini-game/activity. I generally have accepted most updates with no complaint, but I think this skill could have been done a bit better. One thing that would have made the skill more fun to train is by allowing some dungeoneering experience to be gained while completing puzzles in the rooms, instead of an "all or nothing" xp reward at the end of each instance. If someone has an Internet issue in the middle of an instance, he/she would lose everything that had been done so far. It happened to me when I was close to finishing a pretty lengthy instance - annoying waste of time that was! Again, I generally have liked most Jagex updates (unlike those that seem to gripe about most of them), but just the one suggestion I gave above would really improve this new skill dramatically!