Bullet Arena version Alpha 1.0.4 was just published yesterday !
It's an online shooter with sandbox/base-building elements. You can either host your own server or play on a dedicated one to fight against other players. Each kill earns you in-game money, which you can then use to buy various structures, items and devices to help you win against your foes.
The game includes many things such as power wires & powered structures, turrets, generators etc ...
If you're interested, don't hesitate to check it out at https://masnsen-c.itch.io/bullet-arena ! The game is currently on sale at -30% (2.33$) for Christmas.