Free warzone software for linux

Warzone 2100 is a real-time strategy game, developed by Pumpkin Studios and published by Eidos Interactive. Although comparable to Earth 2150 in many significant respects, it does contain aspects that are unique.
These include various radar technologies, a greater focus on artillery and counter-battery technologies, more frequent in-game cinematic updates as gameplay progress, as well as a different vehicle design method. It was released in 1999 for both PC and Playstation.
In late 2004 warzone was released by its copyright holders, Eidos Interactve, to the public under the GNU General Public License (GPL), and the Warzone 2100 Resurrection Project was born.

Main features:
- 400+ Technologies to research
- 2,000+ different units to design
- 3 Large campaign maps to conquer
- 24 Fast play mission maps for extra action
- Intelligence Display sets objectives dynamically
- Interactive message system
- Fast Play Interface graphically Based
- Quick Screen Navigation
- Fast Find System for units & structures
- Set Factories to constant production
- Automatically send each factorys units to where you want them

System requirements:
- gawk
- SDL
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- MAD
- OpenGL

Enhancements
General:
- Change: No longer require space between rearm pads, allow dragging pad production with mouse, and droids may drive over inactive rearm pads (r7701, ticket:569)
- Fix: Various crashes related to failing orders (r7699)
- Fix: Show translations for finished research display (r7730)
- Change: Add more information to the crash dump file (r7740, 7745)
- Fix: Mac users can read in .wz files (r7754)
- Fix: Experience speed adjustment happens after max speed limit; fix bug with speed calculation. (r7761)
- Fix: Numerous issues with NTW mod (r7676-7677, r7713-7716)
- Fix: fix to *never* control the transport in SP games. (really this time!) (r7776, ticket:568)
- Change: Allow droids to grab artifacts and oil drums from up to 1 tile away (r7779)
- Change: Bump up MAX_RESEARCH to 500 from 450. (r7774, ticket:599)
- Fix: Make sure we take xOffset into account, we dont always start at 0 for the FMV text. (r7780, ticket:625)
- Change: When host drops from the lobby, abort the game. (r7787 ticket:583)
- Fix: Make sure either parameter isnt below the minimum screen res. that we support. (r7786)
- Fix: Make sure we take xOffset into account, we dont always start at 0 for the FMV text. (r7780, ticket:625)
- Fix: Clear the keyboard/mouse input on lost focus correctly. (r7797, ticket:515)
AI:
- Fix: Resolve AI droid traffic jams by clearing orders and make jammed droids stop going for repair (r7700, ticket:597)
Campaign:
- Fix: Flashing box around mission timer was too small, resulting in a graphics glitch. (r7672, ticket:596)
Translations:
- Fix: Italian and Slovakian translations updated (r7769, ticket:621, r7772, ticket:615)
Build system:
- Fix: Various build system issues (r7669, r7664, r7663, r7661, r7655, r7642, r7640)
Graphics:
- Fix: No more ugly texture seams (r7718, r7724, r7757)