If you're after a strategy game that brings things back to basics and has no moving units, take a look at Radiis. Developed by Urban Goose Games and release last month, Radiis will have you conquer a map using only buildings and it strangely works.

Disclosure : Key provided by the developer.

The basics are simple with you constructing buildings to acquire tiles. Tiles under your control allow you to place down more buildings, and the more tiles you have the more your population will increase. The more population you have, the quicker you will gain money each turn to build more. Your buildings will also attack any enemy buildings in range, so once they're destroyed you will start to take over their tiles and expand.

That might sound simple, but there's a little more to it than that. The terrain you pick can make or break your game, as different types of terrain have a different maximum population. On top of that, you also need to take into account the height of tiles as your buildings can shoot two tiles down, but only one tile up. When it comes to territory expansion, you can expand two tiles down, but only one tile up so how you expand becomes even more important. So no matter where you expand, there will always be an advantage and disadvantage. Creating a pretty interesting tug of war and it can go on for a lot of turns, depending on how far you can plan ahead and react to the enemy expansion.

There's also different types of buildings, each with their upsides and downsides. Some are quick for expansion, but weak, while others are the opposite and they cost different amounts to build. So when you take all these elements together, for a game that only has you place down buildings there's a lot of strategy involved with many ways to win and lose.

Official Features:

Unique turn-based strategy gameplay featuring no units, only buildings

Over 20 hours of gameplay in the Campaign mode

Skirmish mode with many different types of maps

Up to 16 players per game

Multiple difficulty settings

Custom map support and map editor

Available in English and in French

You can find Radiis on Steam. If you love strategy games, this is a pretty safe bet. It works really nicely and Linux and it can be quite a challenge.