TouchArcade Rating: A masterful blend of distinct gameplay styles is what makes Ocean Keeper shine. It successfully merges side-scrolling mining with top-down mech combat, creating a compelling and endlessly replayable experience reminiscent of titles like Blaster Master and Dave the Diver.
In Ocean Keeper, you pilot a powerful mech on a strange underwater planet, venturing into subterranean caves to gather resources. These side-scrolling mining sequences, where you excavate rocks to uncover resources and artifacts, are punctuated by waves of enemy attacks. Successfully mining earns you coins, which are crucial for upgrading your equipment. The limited mining window adds a strategic layer, forcing you to balance resource acquisition with impending combat.
Once enemies attack, the perspective shifts to a top-down twin-stick shooter with light tower defense elements. You'll defend your mech against waves of diverse underwater creatures. Resources gathered during mining fuel upgrades for both your mining equipment and your mech, via extensive branching skill trees. The roguelike nature means death resets your progress within a run, but persistent upgrades ensure continued advancement across multiple playthroughs. Expect varied overworld and cave layouts with each session.
While the initial stages might feel slow and challenging, perseverance is key. As you accumulate upgrades and refine your skills, Ocean Keeper truly unfolds. The synergy between weapons and upgrades forms the core of the gameplay loop, encouraging experimentation with different builds and strategies. Initially uncertain, I found myself captivated by the game's addictive gameplay once it gained momentum. The diverse upgrade paths and satisfying combat make it difficult to put down.