Outnumbered

Outnumbered is a game about destruction and battles against large armies. Survive, adapt and evolve your ship to dominate the battlefield.

The game is currently in Beta (V0.6.0, ongoing game balancing) with the following features:

Game Features

• Choose out of countless Weapon, Defense and Enhancement Systems (Deck-Building and Credits System)
  
• Top-Down Rogue-Lite Shooter Action
  
• Destroy hordes of enemies and bosses
  
• Ship Configuration
  
• Available Game Modes/Missions: Obliteration, Time Survival, Aurora and Bullet Hell
  
• Randomization to create unique playthrough experiences
  
• More explosions than in a Michael Bay movie!

If you like large-scale battles, you should definitely take a look at:
https://store.steampowered.com/app/2390680