- Rick Dalton: Katie, can you hear me!? What's the situation?
Katie Hazard: Looks like the General needs a new plan!
General Mustache: LAUNCH THE DOOM JET!
A planet not quite like ours is beset by a gigantic (or indeed, colossal) mechanized battle-platform snake Kaiju from outer space carving a path of destruction through the cities and nations of the world. The world's military forces throw everything they can muster at the "Massive World Threat", led by the bombastic General Mustache.
Perhaps surprisingly, the player sides with Colossatron's rampage and more unexpectedly doesn't direct it themselves. Colossatron roams about as it wills (though it can be directed to strike at a target) while the player gathers primary-coloured "power cores" falling from space with the monster to build Colossatron's body. Three cores of the same colour will combine into a bigger core, better armed and armoured (but a more concentrated target), while two different cores become a secondary-colour core with a second-tier weapon. (And three of those combine, too.)
And so Colossatron (and you) rampage through the world, breathlessly described by the Framing Device of Action News 6 reports from slick studio anchor Rick Dalton and field reporter Katie Hazard, with emphatic input from General Mustache.
The following tropes are exhibited in Colossatron: Massive World Threat:
- Attack Drone: Later levels will introduce experimental sabotage drones, which slowly fly towards Colossatron before latching onto one of its power cores, disabling it until either the core or the drone itself are destroyed.
- Authority Equals Asskicking: In one of the final Boss Battles, General Moustache pilots a giant robot to take on Colossatron personally.
- A Winner Is You: Once you've led Colossatron through all six landmasses and smashed up every city, Rick Dalton pretty much says "Well, that's it, the world has been destroyed. Tune in tomorrow!" (The initial campaign unlocks the varied nations; the game continues with "survival challenges".)
- Badass Mustache: General Mustache, naturally.
- Battle Boomerang: The Boomerang Launcher, a weapon for Colossatron's orange power core, fires boomerangs that can quickly destroy enemies within its firing arc.
- Breath Weapon: One of Colossatron's gadgets allows him to breathe fire from his head.
- Boss Battle: Every third level of the seven continents has a boss vehicle that needs to be destroyed. They include:
- Two Twin Gunner Tanks
- Two Dual Choppers.
- The Super Tank
- The Doom Jet
- A Pincer Attack consisting of The Super Tank and The Doom Jet.
- The Gunship
- General Moustache piloting a mech.
- Combination Attack: The Focused Fire gadget. If equipped, tapping and holding anywhere on the screen will focus the firepower from all of Colossatron's power cores at that specific point for five seconds, increasing the fire rate of all weapons in that time before needing to cool down for another five seconds.
- Description Cut: Rick Dalton ends the intro by saying "We can only hope the creature decides not to attack", which is followed by a button for starting the game, labelled "ATTACK!"
- Drone Deployer: Two of the weapons available for Colossatron's purple power core: Attack Drones, which will attack nearby enemies, and Repair Drones, which will heal any damaged power cores.
- Doomy Dooms of Doom: The Doom Jet, a huge aircraft that is one of the level bosses.
- The End of the World as We Know It: The news ticker in the promotional trailers often says that Colossatron's rampage could wreck the world's cities, ruin the global economy, and destroy civilisation. Rick sometimes declares that it could be the end of the world, in his oddly cheerful fashion.
- Gatling Good: The Minigun, a weapon for Colossatron's orange power core, which shreds enemies with its decent damage and high rate of fire.
- Generic Doomsday Villain: Colossatron has no knowable motives or agenda, and smashes up everything because, well, what else would a giant mechanical serpent bristling with weapons do?
- Gosh Darn It to Heck!:General Moustache: SON OF A BISCUIT!
- Green-Eyed Redhead: Katie Hazard.
- Healing Factor:
- One of Colossatron's green power core weapons is Proximity Repair, which repairs other damaged power cores in a small area around it.
- Colossatron himself can equip the Regeneration gadget, which slowly repairs all attached power cores.
- Hero Antagonist: General Moustache may be a General Ripper who's willing to make any sacrifice to destroy Colossatron, but considering that Colossatron is causing The End of the World as We Know It single-handedly, it's kinda warranted.
- In Love with Your Carnage: Rick Dalton shows a downplayed form of this, being just a bit too enthusiastic about Colossatron's rampages and the destruction caused, probably because they make for great viewing figures for Action News 6. (Occasionally, the news ticker reports that the station is getting its biggest audiences ever from the crisis.)
- Large Ham: Every line by General Mustache is delivered with strident bluster, and many of them are bellowed at the top of his voice.
- Frickin' Laser Beams: The Laser Beam is a weapon available for Colossatron's yellow power core, which fires a constant beam of energy described as being "hotter than the surface of the sun".
- Laser Cutter: A namesake weapon for Colossatron's green power core, which fires high damage, penetrating energy sawblades in a straight path.
- Life Drain: The Reaper, a weapon for Colossatron's red power core, does this to enemies.
- Lightning Gun: The Thunder Blaster and the Lightning Spire, two weapons for Colossatron's blue power core. The former shoots balls of lightning that damages enemies as it passes, and the latter fires a constant bolt of electricity at a single target. Both weapons have the chance of stunning their target.
- Magnetic Weapons: The Railgun, a weapon for Colossatron's purple power core, which can penetrate targets and deals massive damage, compensated with a low rate of fire.
- Make Me Wanna Shout: Colossatron's shock roar, which temporarily stuns enemies.
- Meaningful Name: Katie Hazard is a field reporter out among the danger, General Moustache has prominent facial hair.
- Plasma Cannon: A namesake weapon for Colossatron's green power core, which rapidly fires high-damage plasma bolts with generally poor accuracy.
- Punctuated! For! Emphasis!:General Mustache: Get. Those. Tanks. TO THE BATTLEFRONT!
- Segmented Serpent: The player character is one, with each segment corresponding to certain weapons and/or abilities.
- Smarmy Host: Rick Dalton has the voice, the demeanour and the coiffed hair, and, according to the news ticker, has five people to do his make-up.
- Spread Shot: A namesake weapon for Colossatron's red power core, which functions like a shotgun.
- The Quisling: Action News 6 is a downplayed example. While Rick Dalton is not trying to curry favour with it, he clearly admires Colossatron and is excited by its destruction.
- Suicide Attack: Boom trucks: Military pickup trucks loaded with either a full payload of dynamite or an entire nuclear warhead. While rather slow, destroying them creates a large explosion that can damage Colossatron should he get caught in the blast radius.
- Taking You with Me/Self-Destruct Mechanism: Once all of its power cores have been destroyed, Colossatron's head explodes in a blast that destroys everything else on the screen.
- Colossatron's individual power cores will also do this once they have sustained enough damage. An optional gadget you can choose can increase the damage and radius of the explosion.
- Title Drop: The name "Colossatron" is all over the place, of course, but the subtitle appears a few times too:
- In the intro, Rick Dalton reports "The military are declaring Colossatron to be a Massive World Threat."
- Each time you start a level, the screen flashes "!!MASSIVE WORLD THREAT!!"
- One of Rick's lines after a Survival Challenge is "What an incredible rampage! Colossatron truly is a massive world threat."
- Unrealistic Black Hole: The Black Hole Generator, a weapon for Colossatron's purple power core, shoots these. Upon impact, they suck nearby enemies into the point of impact, dealing damage and stunning them.
- Villain Protagonist: Colossatron, a mechanized serpentine Kaiju with enough firepower to obliterate a city and a penchant for destroying large numbers of them with absolutely zero provocation.
- Zerg Rush: Colossatron's defeat is less likely to be caused by the huge boss machines than the sheer weight of tanks, gunships, and bombers sent against it. (Especially as crowds of aircraft obscure your view of Colossatron, so you can only plug power cores in blindly.) The Survival Challenges just keep piling on more military force until you're finally overwhelmed.General Moustache: SEND IN EVERYTHING WE'VE GOT!