PSA: You Can Fly Additional Aircraft By Typing, "onlytheharrier," in the Main Menu.

[(OKU) Paradox]

The biggest complaint about Tiny Combat Arena's variety is pretty justifiable: enemies and allies can fly several planes, but you're stuck with the AV8B and nothing else. The thing is, you actually can fly NPC aircraft by typing, "onlytheharrier," in the menu. You don't need to access the console or anything, just type it when you're in the menu and it will work.

Why the developer decided to put additional aircraft into the game as an obscure cheat code instead of putting them front-and-center as valuable additions to the game, I don't know. Sure, they might not be, "complete," but they're a big boost to the game's replayability and fun factor that the Harrier alone just wouldn't be able to provide after prolonged periods of use.

Additionally, there's a lot of good plane mods available in the TCA Modding Community Discord, from MiG-25s to Su-27s and F-14s. Somebody's even done an Ace Combat Zero: The Belkan War pack, featuring not only the planes but seemingly several missions inspired by the game as well.