The energy system is a very common solution not only for mobile games but also for Gacha games. It is no different in the case of ToF. This guide page will explain to you what Vitality is all about, how it can be obtained, and whether it is important to use it.
Vitality is simply another name for energy that you can spend on various activities and bonus modes in the game. The maximum you can have is 180 Vitality.
Using Vitality is advisable and even required if you want to win powerful rewards. Mainly because for participating in the modes, you will be rewarded with Matrices, armaments, lots of experience or gold, among other things. You can get a lot of benefits at a very fast pace, expending energy that will renew itself over time anyway.
You can get Vitality in several different ways. As you might guess, the most optimal way is to simply wait for it to renew itself. You don't have to be in the game for this energy to start renewing itself. However, a lot of time must pass for it to fully replenish itself.
There is another option that requires sacrificing a certain amount of Dark Crystals. We are talking about the Vitality solution item. After using this bottle, you will get immediately 60 Vitality points. You can purchase one such vial for 50 Dark Crystals in the HOT section. Each subsequent purchase of this item will cost 2 times as much. You can purchase them 4 times a day, however, the cost will be directly disproportionate to the service offered. If you already really want to redeem Vitality solutions, it is worth buying 2 such items per day, as you will then pay 150 Dark Crystals.