Danger from the Deep (known as dangerdeep or DftD) is a free (as in free speech), Open Source World War II german submarine simulator.
Danger from the Deep and source code is available under the GPL license and most of the artwork/data is released under a Creative Commons license (Attribution/NonCommercial/Non-Derivative works).
DftD is currently being developed on Linux (i386 and AMD64) and Windows. There are binarys available for Linux (i386 and amd64), Windows (32bit) and there are some old packages for MacOSX.
Danger from the Deep is a program that makes use of SDL/OpenGL and thus should be portable to other operating systems or platforms.
Danger from the Deep is planned as tactical simulation and will be as realistic as our time and knowledge of physics allows. It's current state is ALPHA, but it is playable. If anyone want's to contribute in development, you're welcome, just email the dangerdeep-devel mailing list. Contributing binary packages for various Linux distributions would also be much appreciated.
Here are some key features of "Danger from the Deep":
· Simple menu system
· Clean user interface (still being updated)
· Basic world simulation; Night and day etc.
· Realistic water and cloud simulation
· Different classes of ships; Destroyers, Battleships, Merchant ships etc.
· Steering, firing, diving, periscope (all the basics)
· Free look engine for testing, periscope, UZO (aiming binoculars), bridge view
· Console for logging purposes
· Basic physics
· Basic destroyer AI
· Vehicle/ship preview
· Support for custom missions
· Tonnage recording
· Log book
· A OpenGL 1.5 Compliant graphics card (OpenGL 2.0 or greater is recommended)
· A fairly fast CPU, anything from 1.0ghz to 1.5ghz or greater should work
· 256mb RAM (512mb or more would be much better)
· The usual suspects; Keyboard, monitor, mouse and some speakers or headphones