Vox Machinae

"Take command and pilot a giant fighting machine in an escalating war between powerful corporations. Select your GDR ("Grinder") chassis and customize it with a powerful arsenal of lasers, missiles, cannons and more as you’re pitted against rival Grinder squads. Engage in seamless drop-in multiplayer action with no loot-box or micro-transaction nonsense. Vox Machinae respects your time, and your wallet."

Vox Machinae is a simulation/shooter game available on PC.