Vampire Survivors helps kids practice and improve the following skills:

Focus: Blocking out distractions. 

The nature of Vampire Survivors is that waves of enemies are constantly approaching and, with time, will become more difficult to defeat. The player needs to use their focus skills to adapt to the changing environments and focus on their character among a lot of visual on-screen noise. The farther the player makes it into a 30 minute run, the more visual information will clutter the screen. Weapons, enemies, experience points, gold, etc will completely cover the screen, sometimes making it hard to even see your character. The player needs to be able to block all this out enough to see where their character is moving and how to best navigate the hordes of enemies that are constantly approaching. 

Planning: Developing a systematic approach for setting and achieving goals.

The goal of the game is to make it to the 30 minute mark of a run. But there are also smaller goals, like unlocking new characters and increasing permanent stats. The player has to decide what they want to achieve in a run before they begin it and then use the leveling up mechanic to help them achieve that goal. Randomly choosing benefits can be helpful to the overall goal of making it to the end of a run but if your goal is to unlock a new character using gold, you may want to focus on benefits that help with this as they come along as well as moving your character around the landscape in a way that allows you to pick up every gold piece you find.