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Vermin is part of the Game & Watch series of handheld videogames, and was released on July 10, 1980; another version of the game was also released that year, under the name The Exterminator. This game basically has the player moving left and right to smack incoming moles with hammers. If any moles are left untouched for a few seconds, the player is penalized with a miss.
Misses can't be cleared at all in this Game & Watch title, which means the player needs to be very cautious.
Vermin was a game in the gallery of the original Game & Watch Gallery.
This game was remade for Game & Watch Gallery 2. The Modern Mode of this game features an Orange Yoshi guarding six Yoshi Eggs from incoming Koopa Paratroopas, Fly Guys, and Boos; different types of enemies move at different speeds. The Boos will not move if Yoshi is looking at one. If the any of the baddies are left unattended, they will start pounding the eggs. Each egg can only take up to three hits. If an egg gets completely broken, the enemy that broke the egg will mock Yoshi, and the player will get a Game Over. Every 200 points, the player gets rewarded a bonus dependent on how many unbroken eggs are on the field, and all the unbroken eggs also break themselves to reveal something good (i.e. Cookies at 200 points, Fruits at 400, Baby Yoshis at 600, Coins at 800, and Super Stars at 1,000, with the cycle only continuing after that). Monty Moles will also appear at 200, 500, and 700 points to lay a Heart on the field. Hitting the heart with the hammer will recover a third of the damage done to the eggs.
The game has been remade for the Nintendo DSi in the DSi Ware. It was released in April 5, 2010 for the US, April 9, 2010 for Europe, and July 15, 2009 for Japan. It was later re-released on the 3DS's Nintendo eShop.