Improve readme

README.md

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 <!-- markdownlint-disable-file MD033 -->
 
-# SpaceCadetPinball
+# 3D Pinball for Windows – Space Cadet
 
 ## Summary
 
 Reverse engineering of `3D Pinball for Windows – Space Cadet`, a game bundled with Windows.
 
+## About the original game
+
+3D Pinball for Windows – Space Cadet is a pinball video game developed by Cinematronics and published by Maxis in 1995. It features pre-rendered 3D graphics and three tables—Space Cadet, Skullduggery, and Dragon's Keep. On each table, there are displays on the side that show the players' score, ball number, player number, a display for various information and a table-specific image.
+
 ## How to play
 
 Place compiled executable into a folder containing original game resources (not included).\
 Supports data files from Windows and Full Tilt versions of the game.
 
+Use your keyboard or mouse to control the flipper
+
 ## Known source ports
 
 | Platform           | Author          | URL                                                                                                        |
@@ -60,9 +66,22 @@ Compile with Visual Studio; tested with 2019.
 ### On Linux
 
 Install devel packages for `SDL2` and `SDL2_mixer`.\
+
 Compile with CMake; tested with GCC 10, Clang 11.\
 To cross-compile for Windows, install a 64-bit version of mingw and its `SDL2` and `SDL2_mixer` distributions, then use the `mingwcc.cmake` toolchain.
 
+```bash
+# On Debian and Ubuntu
+sudo apt install cmake build-essential ninja libsdl2-dev libsdl2-mixer-dev libsdl2-mixer-2.0-0  libsdl2-2.0-0
+
+# On Fedora
+sudo dnf install TBD
+
+# Build
+cmake -GNinja .
+ninja
+```
+
 [![Packaging status](https://repology.org/badge/tiny-repos/spacecadetpinball.svg)](https://repology.org/project/spacecadetpinball/versions) 
 
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