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Bubble Bobble 4 Friends details "Extend" feature, new trailer
Publisher ININ has shared fresh information about Bubble Bobble 4 Friends. We now have details regarding the “Extend” feature, which acts as a skill upgrade system. Here’s the full rundown: This is a new skill upgrade system that will allow players to boost their dragons with additional features. To unlock the upgrades, players will need to collect letter bubbles, each...
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