Tank Island is an open source 2D top down shooter game that was created with Ruby using Gosu game development library while writing this book.

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Gameplay video on YouTube

Complete process of building this game is described step by step in this free to read book:

Developing Games With Ruby

Before installing, make sure you have:

• Ruby installed, preferably through rbenv, not rvm.
• ImageMagick (gem install rmagick should work).
• Gosu prerequisites for Mac, Linux or Windows

To install it, run

$ gem install tank_island

There are several ways to start the game.

$ tank_island

$ w=1600 h=1200 tank_island

$ fs=1 w=1200 h=800 tank_island

• W A S D moves your tank.
• Mouse left click shoots.
• ESC goes into menu and away from it.

• R respawns your tank.
• T spawns an enemy tank under mouse cursor.
• F1 enters debug mode.
• F2 toggles profiling