16t is a 1991 action game for the Sega Mega Drive by Sega released exclusively on the Sega Game Toshokan service (and on the various compilations that package such games).

You play as a computer programmer who goes into his bugged program to debug it by squishing the bugs with 16-ton weights. Levels are a series of platforms that wrap around both horizontally and vertically. A and C jump and B throws a 16-ton weight. You can only throw a certain number of weights at a time; the number is shown at the bottom of the screen. The level ends when you crush all the enemies. Getting crushed or getting hit once causes you to lose a life.