Count Bombs were first made available in the devkit for the original Make a Good Mega Man Level, where they appeared in the entries Sunset Siege, Wily Combo, and Thunderclyffe Plant, as well as the Wily stages Dr. Wily's Incinerator Chute, Everything's Blowing Up, and Flashback Database.
Count Bombs returned in Make a Good Mega Man Level 2, where they appeared in 16 entries, as well as the Wily stages Classic Castle and Reality Core, the Tier X stages Coyote Man, The Quickening 2 and Swiss Hotel, the Pit of Pits sub-levels "Deja Vu", "Hot Mess", "Stone Man Rip-off", and "You know the Drill.", and in Null and Void. They also appeared in the Make a Good 24 Hour Mega Man Level Wily stage Abyss Balcony and the Make a Good Mega Man Level 3 Judge Application Level Space Crusade.
Count Bombs will initially serve as solid objects, which will deflect most projectiles. If Mega Man presses the button, the bomb will count down, exploding shortly after reaching 0. Starting in MaGMML2, the explosions will damage Mega Man.
The creation code value "time" can be used to set the number a Count Bomb starts at before it counts down. By default, the number is 3.