A newly out game on steam called "They Are Billions" is an interesting take on Zombie games & RTS. The game is quite polished despite being in alpha still.
I'd argue it's a zombie version of Age of Empires.
You start the game with a "Town Centre" 4 archers and a soldier.
You need to build a base and expand as soon as possible, while there are constant waves of Zombies attempting to destroy your town. You can build walls, towers and a series of men to protect your town.
Good:
- Difficult learning curve due to game mechanics.
- Very polished for an alpha release. Big things will come of this game.
- Addictive.
- Graphics wise similar to Age of Empires 3.
- Many ways to build your town.
- Maps are randomly generated meaning games are never the same.
- A single weakness in your defence may destroy your entire town (frustrating when you've spent 3 hours on it).
- Only in alpha version at the moment, high potential for improving gameplay.
Bad:
- You cannot save & go back if you fail. 1 shot per map.
- Winning can be map dependant as you may get more beneficial choke points.
- Lack of units at the moment.
- Winning endgame is dependant on - a mix of snipers, thanatos & executors, this can make it repetitive.
- Priced at $25 usd - though arguably I've spent 50 hours on the game so far.
- Single player only. You vs CPU (Game has potential later on for multiplayer?)
This was my town prior to invasion. I won :)
Honestly, if you have $25 USD sitting around, you won't be disappointed. Even spend some crypto gainz buying it!