Love mecha combat? Gearbits is a new indie release on Steam from Quackpond Games, following on from their early builds on itch.io. The developer mentioned that it was in development for two years, started as they didn't find the exact type of mecha combat game they wanted to play - so they made it themselves.
You go through 20 missions taking down enemies, giving you a chance to unlock 10 different mech to run and fly around in with each machine having their own strengths and weaknesses. There's over 30 weapons to equip, so a little something for every type of pilot from missile launchers to massive beam cannons. The Steam release also just recently got a free update to add in a wave-based survival mode.
Check it out on Steam.