Open-ended

See also: sequel hook

Generally this should only include cases where the open issues are mentioned, hinted at or such in the ending or near it but not by introducing new or returning challenges as per sequel hook. Less so for cases where the earlier story would imply such for those paying attention. Comparable to a cliffhanger without the drama.

Often this is a signal that the game makers want to make a sequel or their desire to feed any fan community they hope the game gets.

The usual mention that it wasn't the last of the protagonist's adventures or something is another story altogether should be ignored as they're unnecessarily common and vague (perhaps add more specific tag for such?).