In the Age of Stars, skills, like heroes, are classified by grade. S-grade is the highest, followed by A-grade, which are also very commonly used. Today, I will talk about how to choose A-grade skills in the Age of Stars. Generally, S-grade skills in the game have high value, but this is not always the case for A-grade skills. You need to pick some more suitable ones from them to maximize resource utilization.

Based on previous game tests, I have summarized some very useful A-grade skills to recommend to everyone. In certain aspects, they can even surpass S-grade skills and are well worth choosing. The first one is the Oxygen Supply Device, an A-grade active skill. Its effect is that after entering combat, it heals itself every 10 seconds, restoring a certain amount of durability, and has a chance to put surrounding enemy targets into an overload state, preventing rapid fire after overload. This skill is very suitable for teams with counterattack capabilities. When upgraded to the maximum level, it will restore 6% of its own durability every 10 seconds, and the probability of overload will increase significantly at full stars.

The second one is the Gene Chain, also an active type, which makes a determination every 10 seconds during battle, with a chance to restore the durability of itself and two nearby allies. At the maximum level, the amount restored is 4.4% of the caster's current durability. This is the only A-grade skill that can provide area healing, making it very powerful. When paired with a healing team, it can maximize the healing output. The third one is the Cardiotonic, an A-grade rapid-fire skill. During normal attacks, there's a chance to trigger rapid fire, which also comes with a healing effect, restoring the user's durability. The amount restored is 30% of the rapid-fire damage. The higher the damage, the more durability is restored. It's the only rapid-fire skill that provides healing, making it perfect when used with a rapid-fire team.

The fourth one is the Counter Shock Device, a counter-damage type skill, providing counter-damage effects and increasing one's own durability. For counter-damage teams, both of these attributes are very critical. The higher the durability, the more damage it can withstand, and the higher the counter-damage, the higher the output damage.

Now you should be clear on how to choose A-grade skills in the Age of Stars. These A-grade skills, when fully developed to their maximum star and level, are absolutely no less powerful than S-grade skills. As long as you find the right team combination, the effect they can produce is terrifying. Compared to S-grade, A-grade skills are easier to develop, making them accessible even for casual players.