======Upgradeable Weapon======

Most games increase the player's firepower by either adding to their inventory or replacing their current weapon with one that is stronger. However, there remain a number of games that offer various upgrades to a sole weapon carried with the player throughout an entire game.

=====Examples=====

====Arm Cannons====

    * Mega Man series - Mega Man's Mega Buster
    * Metroid series - Samus Aran's… Power Suit's… Arm Cannon

====STG Weapons====

In the majority of [[genre:shooters|shooters]], aspects of the player's firepower (such as speed and sheer amount) can be upgraded by either collecting powerups or, in some cases, obtaining a set score.