Turn-Based Battle isn't as satirically perfect as Upgrade Complete or Achievement Unlocked, two games from the same developer with the same snarky metacommentary on common game tropes. But it's still pretty amusing.
It's a quick-playing Flash game of, in essence, a single Final Fantasy-style boss battle; the game calls this style "JRPG," but from my perspective, that term includes action games like Zelda as well, and Turn-Based Battle focuses specifically on the turn-based side of the JRPG.
Winning, if you can call it that, requires adopting slightly different strategies for different enemies, and frequently shopping for powerups and character upgrades. And it pokes fun at the tedium of the Final Fantasy-esque combat style without quite ever edging over into tedium itself, which is no mean feat.