- Adaptation Displacement: A variation. The PS1 version was meant to be a direct home port of the arcade version, but ended up being a Reformulated Game that most fans knew as the first installment of the Ace Combat games due to its rename in Japanese version.
- Sequel Displacement: How many fans know that the arcade version even exists? Or for that matter, its sequel, Air Combat 22?
- Awesome Bosses: The Final Boss and first original aircraft of the series, Sky Fortress.
YMMV / Air Combat