Tap Tap Fish AbyssRium – Healing Aquarium is a simulation game offered by FLERO Games. It has more than ten million downloads on the Play Store. Upgrade Corallite, Corals, collect vitalities, create varieties of fishes and build an amazing Abyssrium.
Gameplay

It’s an idle tapping game. In it, there is a Carollite at the abyss. You have to tap on the screen to wake it up and collect vitalities. For each tap, you will get a certain amount of vilalities. With the vitalities, you can upgrade Carollite, buy corals, fishes and upgrade them. Corals auto-produce vitalities every second. When you buy a new coral, maximum fish capacity also increases by 5. You can buy farms for seaweed, crabs, clams, sea urchin etc and also decorate the aquarium. Buy fishes to make a lively aquarium.
Upgrade Corallite & Corals

Upgrading the Corallite and Corals are the main part of the game. When you upgrade the corallie, it increases the vilalities per tap. And upgrading the corals increases the vitalities produced per second. After every 25 levels, their production is increased by 2x. Upgrading cost also increases with each upgrade.
Skills & Artifacts

There are three skills and artifacts that unlock when you upgrade the corallite to level 100, 300 & 500. Skills effects remain for a certain period of time but artifacts’ effects are permanent. You can upgrade them with diamonds to increase their effects. Skills & artifacts are as follows:
Skills

Volcanic Eruption – When it is active, it taps the screen automatically 10 times per second for a certain period of time. Upgrading it will increase the active time.
Delicious Food – With this skill, you will get the vitalities instantly equal to 5000 times of the vitalities per tap. Upgrade it to increase the vitality multiplier.
Song of the Moon – Use this skill to increase the production of vitality from both corallite and corals by 500% for a certain period of time.
Artifacts
Remains of a Nautilus – It auto-taps the corallite at a constant rate.
Mystic Shell – It increases the production of vitalities per tap by some percent.
Glowing Conch – It reduces the cooldown time of all skills by 5% at level 1. You can upgrade it to increase the cooldown reduction.
Varieties of Fish

There are many types of fish you can buy. Fishes give you watermelon over time. With the watermelons, you can buy event fish and upgrade the crab skill. Buying a fish increases the vitality production by 200%. You can only store a limited number of fishes. To increase the capacity, you can buy corals.