A colossal battle two years in the making is about to be joined, with the USA vs Japan giant robot duel to take place on Tuesday, Pacific Time. Sci-fi lovers have waited patiently since the folks behind the MegaBot and Kuratas robots confirmed they'd be putting their metal-shredding, 15-foot robo-death machines to the test, where giant fists and projectiles will be swung and flung until one reaches its brutal end.

The challenge was laid down by America's Megabots in 2015 and Japan's Suidobashi duly accepted, setting the wheels in motion for a robot duel that may just end all robot duels. Suidobashi however, agreed only on the condition that the fight would allow for hand-to-hand melee combat.

"Just building something huge and sticking guns on it. It's Super American ... If we're going to win this, I want to punch them to scrap and knock them down to do it," designer of the Kuratas robot, Kogoro Kurata, said at the time.

Make no mistake, both bots will still have the capacity to shoot projectiles at the one another. The MegaBot is a 15 ft tall (4.5 m), 12,000 lb (5,500 kg ) tower of metal that can hurl three-pound (1.3 kg) oversized paintballs at over 130 mph, enough to put a dent in a car panel.

The Kuratas, meanwhile, stands around 13 ft (4 m) tall, weighs 9,000 lb (4,000 kg), and is fitted with twin Gatling BB cannons that can fire 6,000 BB pellets per minute. It also has a water-cannon-like device that fires flaccid missiles in rather indiscriminate directions. Both bots will be piloted by a member from each team.

The event will be live-streamed on Twitch and starts at 7pm Pacific on Tuesday. You can check out the promo video below to get pumped up in the meantime.

Source: MegaBots, Suidobashi