Upgrade Sub

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’ll quickly be able to upgrade your sub! Before you know it, you’ll be getting extremely far! Make sure you dodge mines and other enemies. Upgrade your oxygen first so you can collect gems for more money. This game is all about the grind; do you have what it takes to upgrade your sub?

Explore more games in our Water games section and discover popular titles like Girls Fix It: Amanda's Ski Jet, Crazy Fishing Html5, Boat Battles, and Happy Trucks - all available to play instantly on Y8 Games.