BossConstructor [Steam, Official Site], an indie 2D spaceship building and battling game recently added in some free new content.
There's a new weapon, Disintegrator Beam, which can be made quite powerful with the addition of extra charger modules attached to the ship.
Weapons can now be set to auto-fire, you also automatically collect items in a sector if you defeat all the enemies.
The developer is planning two more additional free content updates, which will add more ship modules and additional gameplay mechanics. Sounds fun!
See the release notes here.
I liked the game quite a lot when I tested it a while ago, just a shame the menu isn't too clear.