Grimbound

In short:

• A minimalistic but challenging blend of RTS, Tower Defence, and Survivors-like
  
• No nonsense action-packed high-tension gameplay
  
• Rebuild a kingdom city-by-city in a company with hand crafted levels and 4+ hours of gameplay
  
• Quick levels of up to 45 minutes
  
• Simple meta progression
  
• Slay hordes of monsters
  
• Rebuild your city and defend it with your hero, troops and towers
  
• Become stronger and upgrade your hero to unlock new overpowered abilities
  
• Heroic difficulty with larger and stronger hordes for those brave enough