A meditative idle aquarium where time flows like water and koi evolve across 50 generations
New seasonal koi variants available this month only
Cultivate your aquarium faster with exclusive bonuses designed for new pond keepers. Choose your path to deeper waters.
All bonuses subject to progression requirements. Minimum breeding activity applies to match bonuses. Genetic rerolls carry x30 evolution point wagering. New pond keepers only. Offers valid for 30 days from registration.
Deep Pond operates on a biological simulation engine where each koi carries a 12-trait genetic profile. When you pair two fish for breeding, the offspring inherit dominant and recessive genes following Mendelian inheritance patterns modified by pond environment factors like water temperature, lily pad coverage, and seasonal moon phases.
The idle progression system accumulates evolution points even when the app is closed, calculated at 1 point per 3 minutes of real time. These points unlock new pond zones across 8 biomes, each introducing unique environmental mutations. A Generation 15 koi in the Moonlit Shallows biome may develop bioluminescent scales, while the same lineage in Deep Current zones evolves streamlined bodies for faster movement animations.
Unlike timer-based idle games, Deep Pond uses a hybrid tick system where breeding completes based on parent generation numbers rather than fixed countdowns. Two Generation 5 koi produce offspring in approximately 45 minutes, but Generation 20 pairs require 4 hours, creating natural pacing that rewards long-term cultivation strategies over rapid clicking.
Track lineages through a visual family tree spanning up to 50 generations. Each generation unlocks new trait combinations from a pool of 200+ genetic variations including scale patterns, fin shapes, body proportions, and behavioral animations. Rare mutations appear at 3.7% probability per breeding cycle, with ultra-rare variants at 0.4% in specific biome combinations.
Expand your pond across interconnected zones: Shallow Garden, Lily Forest, Moonlit Shallows, Deep Current, Coral Grotto, Volcanic Vent, Frozen Spring, and Abyssal Trench. Each biome introduces environmental modifiers affecting koi evolution speed, mutation rates, and visual appearance. Unlock requirements range from 500 evolution points for Lily Forest to 50,000 for Abyssal Trench.
The audio engine layers 12 procedurally mixed nature sounds: water ripples, bamboo chimes, distant thunder, cricket chirps, wind through reeds, koi splashing, rain patterns, and seasonal bird calls. Sound intensity adapts to pond population density and time of day, creating a dynamic meditation environment that never repeats the same mix twice.
Deep Pond eliminates countdown anxiety by using passive accumulation mechanics. Breeding happens in the background without requiring check-ins. No energy systems, no stamina bars, no forced advertising. The game respects your attention by rewarding observation over compulsion, with optional notifications only for completed breeding cycles or rare mutation discoveries.
Unlock the Lab at Generation 10 to manually influence trait inheritance. Spend accumulated evolution points to increase specific trait probabilities by up to 40% for a single breeding cycle. The Lab interface displays real-time genetic probability calculations, letting you plan breeding strategies around desired outcomes like metallic scales or double-tail fins.
Monthly content updates introduce limited-time koi patterns tied to real-world seasons and lunar cycles. Spring Cherry Blossom koi with pink gradient scales, Autumn Moon variants with silver luminescence, Winter Frost patterns with crystalline textures. Seasonal fish remain in your pond permanently once bred, creating collection value for long-term players.
Developer: Tranquil Byte Studios
Version: 2.1.0 for Android 6.0 and above
Released: June 2026
Platform: Android mobile devices with 87 MB storage requirement
Tranquil Byte Studios specializes in meditative simulation games that prioritize player well-being over engagement metrics. Deep Pond represents their philosophy of creating digital spaces for contemplation rather than competition.
Free on Android 6.0+. No account required. Offline progression included. Download completes in under 2 minutes on standard connection.
Download Deep Pond for AndroidContains optional in-app purchases for cosmetic pond decorations. Rated E for Everyone. No personal data collection beyond anonymous analytics.