i meant in which game the mechanics were

Sorry.

Could you plz tell me which game??

FORGOTTEN MECHANICS

SUCH AS

:- GUN DOWN WHEN WALLS ARE CLOSER

:- GUN ALIGNMENT WITH THE CENTRAL TARGET POINT (MEANS GUN IS NOT STATIC , IT ROTATES)

PLZ read description BEFORE PLAYING IT.

it is premade. so it's  gonna disqualified.

webgl