Does enemy army size grow over time?

[Zechnophobe]

I think you are more likely as not just mistaking which gremlin fight it was. LIke you upgraded a different item than you recall.

All armies on the maps are static at the very least, and nothing 'scales'. If Rune usage could have possibly made a difference, it would only have been the makeup of the army you fought. Since Gremlin towers are based on the size of the defending force, that could have, in hypothesis, changed them.

I really don't think it's true though.