Terrifying 9.11 (Unresurfaced Pirated GBC Game; Early 2000s)

Terrifying 9.11, Also called as: 

驚爆 911 [Shocking 911] (Original Taiwanese Release)

特種部隊 2 基地 [Special Forces 2 Base] (Li Cheng Version)

Is a pirated game released by Hitek in a unknown year.

Gameplay
The gameplay was about 9/11 (As the title says), the opening of the game which is a FMV of the towers being attacked, is actually pretty good for GBC's capabilities, when pressing starts, it shows the story of Bush and Osama, arguing about the attacks of 9/11, with Osama says in the end: "I didn't do the attacks! No evidence!".

The game starts, and its a port of Metal Slug, and based on videos, its actually pretty good for a pirate.

But here comes the interesting part

Theory of Leaked Code
Based on reviews and such others, people had the theory about the game having leaked code of a cancelled game called Metal Slug (GBC), its not proved yet, since the game doesn't have currently an auction, or didn't get dumped.