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Alpha modifications or Alpha Mods were modifications to Ratchet's weapons in Deadlocked. An Alpha Mod didn't necessarily have an immediately obvious change, instead it adjusted the preexisting functionality of a weapon, increasing one of its basic statistical parameters.
In the game there were two ways to gain Alpha Mods: Upgrading Ratchet's weaponry (a weapon earns a new Alpha Mod each time it is upgraded, up until version 10 or V10) or by beating the game and buying them from holo-vendors in Challenge Mode. Upon each level up, more mods can be used. Once a weapon reaches version 2 (V2), the Alpha Mods it has can be mixed and matched as required.
- Ratchet: Deadlocked (first appearance)