Ratchet & Clank: Size Matters

Ratchet & Clank: Size Matters is the fith game in the Ratchet & Clank series for the Sony PlayStation 2 and PlayStation Portable consoles. It is the first game on the PSP. Size Matters was developed by High Impact Games, a company spawning from the original Ratchet and Clank developer, Insomniac Games. It is the first Ratchet & Clank game to get an E10+ rating by the ESRB.

Gameplay
Ratchet and Clank: Size Matters has most of the basic gameplay elements from the other Ratchet and Clank games. The weapons are similar from previous games in the series except for the R.Y.N.O. Weapons can gain experience, and mods that are similar to the ones in Up Your Arsenal can be purchased for weapons. Several locked doors require Ratchet to use a shrink ray and then complete a "grind lock" course, dodging mines on the rails and hitting switches with your wrench to safely pass through doors.

Through the game, Ratchet will collect armor pieces for seven different sets of armor, including two sets exclusive to "challenge mode". While Ratchet can mix and match any of the four parts (helmet, body armor, gloves and boots) between any of the sets of armor, collecting and wearing each piece of armor in a set gives Ratchet an additional advantage; for example, using the full Wildfire suit, Ratchet's wrench will set his enemies on fire for additional damage including the additional feature of 28% less damage taken. Certain combinations can also create new sets of armor with unique effects, as well as a boosted defense.

Mini-games include Skyboard Races, demolition matches with Clank vehicles, a basketball-like robot throwing competition, and a robot control game very much like in concept to Lemmings.

Weapons

 * Lacerator
 * Acid Bomb Glove
 * R.Y.N.O
 * Laser Tracer
 * Bee Mine Glove
 * Sniper Mine
 * Concussion Gun
 * Scorcher
 * Agents of Doom
 * Mootator
 * Shock Rocket
 * Suck Cannon
 * Static Barrier
 * Wrench

Plot

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While on a vacation in Pokitaru, Ratchet and Clank meet a little girl named Luna, who's writing a school report on heroes(or heroths'in Luna's case). Shortly after meeting Luna she is kidnapped by mysterious robots. Clank then stumbles upon a mysterious technomite artifact from an ancient race. Ratchet and Clank then set out to save Luna. In the process, they discover a forgotten race of smart, but diminutive, inventors known as the Technomites.

Later on in the game, when Ratchet and Clank finally catch up with Luna, she turns on them, ordering robots to knock Ratchet out and send Clank off to fight for his life in a robot battle arena. Clank escapes and makes his way to find Ratchet, who has a dream about 2 Qwarks (seen are doctors having to kill Ratchet with a chainsaw), the Nightmare Clank appeared, and Ratchet finally wakes. Clank frees Ratchet, and the two destroy the station, and determine that Luna herself is just a robot used by the Technomites specifically to lure Ratchet into a trap, all controlled by the Technomite Emperor Otto. Otto's goal is to create an army of Ratchet clones, using the DNA he was able to extract, then grow them to full size as to capture the most intelligent people in the galaxy and use a brain transference machine to gain their intelligence for himself. However, Ratchet and Clank are able to stop his plan, and thanks to the help of a rather confused Captain Qwark, they're able to reduce Otto's intelligence down to that of a chimp, rendering him non-threatening.

Trivia

 * One of the Clank challenges description says The Ultimate Showdown of Ultimate Destiny, which is a reference to the internet flash comic of the same name.
 * This is the first game which features Clank becoming Giant Clank without Ratchet controlling him on his back.