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README.md

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 # Kosmici
-A simple shoot 'em up DOS game that I wrote in high school
+
+`Kosmici` is a simple shoot 'em up DOS game that I wrote in high school.
+
+![gameplay](gameplay.gif)
+
+[DOS binary download](https://github.com/mlesniew/kosmici/releases/download/1.0/kosmita.tgz) 
+
+
+## Running
+
+The game can be run on modern systems only with [DOSBox](https://www.dosbox.com/).
+
+To run on Linux with DOSBox installed use:
+```
+mkdir kosmita
+cd kosmita
+curl -L https://github.com/mlesniew/kosmici/releases/download/1.0/kosmita.tgz | zcat | tar -x
+dosbox kosmita.exe
+```
+
+## How to play
+
+* Use the mouse to move your space ship
+* Use the left mouse button to fire
+* Use the right mouse button to toggle between weapons
+* Shoot down rocks and aliens before they hit you
+* Firing increases ship temperature
+* When ship temperature gets too high, the ship looses energy/HP
+* When ship temperature drops enough, the ship repairs itself