Real Flash Games

Categories: Action Games

Description: Turn your weak red sub into an unstoppable Juggernaut. This game takes patience, but stick with it. You start off incredibly weak and will die right away, but thanks to a generous flow of currency, you will quickly be able to upgrade your sub.

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Upgrade Sub was published on 2011-10-28 and has been played 1,526 times by our visitors and currently has a rating of 91% after 77 votes. We hope you will enjoy Upgrade Sub.

Tags: Upgrade Sub 2