It is your story. 

Story of a living weapon devised by a malevolent wizards from lands afar. Most dangerous weapon of them all because you were intelligent, insidious yet deadly. Sentient plant, lurking in dark corners at start, growing, evolving, contaminating and killing everyone in the end. Now I know it was merely a test and our city and our lives were merely testing grounds for your makers. 

But the most peculiar thing about you is that all this suffering and destruction started from a single Bad Seed.

Game Summary Pitch

Bad seed is a tile based city contamination simulator. Contamination is simulated in real time while city guards try to fight it. Player intervenes in the scenario by activating abilities trying to navigate the contamination process, collect points of interest, gain new abilities and kill enemies.

The game is a sandbox, thus it may be suited for casual gamers who may enjoy playing with a changing environment in easy scenarios and hardcore gamers who will invent strategies and try to combine abilities in hard scenarios or on hard difficulty.

Theme interpretation (Weapon is you)

Biological weapon in this context is an invasive plant invented in a medieval\fantasy world by an evil wizard. Plant is transported to the target city.  The main goal of the plant is to evolve to the final stage - a flower which can kill people by releasing toxic pollen into the air. 

GDD Link

https://docs.google.com/document/d/1O1RFCtp5LzIm2f4ixswqdGWW43U9YFYHvy-f0FTZTDU/...

Genre

Singleplayer, real time strategy, simulation, sandbox

Controls

WASD control map movement. Q and E to rotate the map. 

Left mouse click selects contaminated tile and activates its ability.