Dim Glow (Steam key/Region free)

Dim Glow is a casual game where you control a dark sphere and you have to shoot at enemies, for each hit you get a point. You also have a limited number of bullets, and 4 lives that are taken away if you are hit. How many times can you hit enemies?

https://store.steampowered.com/app/1347010/Dim_Glow/

Instructions for activation keys to Steam:
1) Download and install the Steam client
2) Register an account or log in with your username in the existing one.
3) Go to the "My Games" and select "Activate via Steam ...", and enter the key received after payment.
4) Once activated, the game will appear in the game list (Library) and you can download it