Free real time game software for linux

Slicetime is a program that helps you track time you spend on projects. Slicetime is designed to make it easy to switch between different projects, the main window is in the shape of vertical sidebar that makes it convenient to keep it always visible on the side of the screen. In short, continuous tracking of time taken on projects is made as effortless as possible.
The purpose of the program is to make you aware of which tasks take more time, and which take less; it can also be used to keep track and charge time if youre working for someone on hourly basis. The advantage of the program is that it lets you switch back and forth very easily, letting you keep a very accurate account of how much a task took even if you have to stop it frequently and work on something else.
The results can be very surprising, something may feel like it took only a few minutes whereas it took almost an hour in real time; the reverse is sometimes true although not as often.
Slicetime main window is a vertical bar with a row of buttons, each button representing a project. When the button is pressed in, the project is active, the rest of projects are inactive. Each project button shows the time taken on the project today. At 12 oclock the daily time is reset and new days count is started.
Time is kept for current day, week, month and total. Example: I may have a slicetime project that has 3:59 time today, 8:00 this week (including today), 17:00 this month (including this week) and 125:00 total time, which may have been accumulated over years.
Slicetime makes it easy to change project time for current day if you forgot to check in or check out. Menu command (add or subtract project time) will add or subtract the time for today. Another command will set all times for total, month, week and day.
Slicetime as of now has two report options, it can report by time taken for each project on a daily, weekly, montly and total basis and the same by percentage. For example, it will show that today project A was 60%, project B - 30% and C - 10%, and will do the same for current week, month and total.
Note that Slicetime does not keep separate time accounting from previous week, month, day, etc. It will not tell you that you spend 5 hours last saturday. It will only tell you total time, time taken on current month, week and day; but it makes perfect sense to keep this data as well, and I will almost certainly add it.
Functionality:
- Add project
- Remove project (deletes all data and button, irrecoverable, use sparingly!)
- Report by time
- Report by percentage
- Set project time
- Add or subtract project time
Version restrictions:
- Number of project buttons is effectively limited by vertical size of screen. On a common 1024 res, you can fit in around 42 projects, which should be enough for anyone, but I will add an option of hiding projects from main window if requested.
- Latest version not tested in Unix, but will most likely work. I will test it soon & fix if needed.
- Could keep time for each past day, week, month, year. Most likely will be added eventually.
Enhancements:
- Several bugs were fixed.
- The interface was changed to be more user friendly.
- Autosave functionality was added to make up for some stability problems on WinXP.

Really Rather Good Battles In Space is a real time strategy game with fleets of spaceships.
Single player real time strategy game following the fall of the great Argonian empire.
Main features:
- a short but relatively polished single player campaign
- pretty (albeit 2d) graphics
- spaceships
- explosions

UPPAAL TIGA is an extension of UPPAAL [BDL04] and it implements the first efficient on-the-fly algorithm for solving games based on timed game automata with respect to reachability and safety properties.
Though timed games for long have been known to be decidable there has until now been a lack of efficient and truly on-the-fly algorithms for their analysis.
UPPAAL TIGA provides a user-friendly graphical interface with its corresponding server, and a command line verifier.
The algorithm we propose [CDFLL05] is a symbolic extension of the on-the-fly algorithm suggested by Liu & Smolka [LS98] for linear-time model-checking of finite-state systems. Being on-the-fly, the symbolic algorithm may terminate long before having explored the entire state-space.
Also the individual steps of the algorithm are carried out efficiently by the use of so-called zones as the underlying data structure. Our tool implements various optimizations of the basic symbolic algorithm, as well as methods for obtaining time-optimal winning strategies (for reachability games).
Enhancements:
- This version fixes two major bugs: Wrong answers (and strategies) were given for some cases involving delays, and the simulator didnt handle urgent and committed states properly.

DropTeam is an online multiplayer FPS for Linux.
DropTeam combines accurate physics and ballistic systems, intelligent and realistic unit and weaponry capabilities with fast paced action set in a stark future of humanity. This Public Test is being offered in three different formats. One for Mac, one for Windows and one for Linux. This marks the first title published by Battlefront.com to offer Linux support!
Main features:
- A rich, fleshed out universe complete with a engaging back story and detailed history.
- Realistic combat system that models projectile/armor penetration, various munition types, and interior vehicle damage in detail.
- Huge, detailed and varied alien landscapes each planet accurately modeling its own gravity and atmospheric density, radically changing the tactical situation.
- Map sizes up to a massive 1000 (!) square kilometers.
- Terrain height resolutions from small ridges and vehicle fighting positions to towering hills and mountains.
- Deformable terrain with engineering vehicles digging out trenches in real time, ordnance created surface cratering and even trees toppling over under artillery fire.
- Dynamic environmental effects include building destruction and vehicles exploding and flipping over.
- Support for enhanced graphics effects including advanced shaders and High Dynamic Range rendering.
- Terrain uses dynamic tessellation (continuous Level of Detail) to render high resolution terrain at large sizes.
- Up to 16 human players or more supported, depending on system specs. Maximum online players realistically only limited by game server bandwidth, CPU and RAM.
More background and info on the game can be found on the DropTeam webpage located here.
The purpose of this release is to test DropTeams network functionality with a large number of players. Anyone can play for free in order to help us test DropTeam but this build has the following important restrictions:
1. Single player is disabled. You can only play network games with this release. The full version of the game includes single player skirmish games and a single player campaign.
2. This release only allows you to play 2 scenarios. The full version of the game includes 21 scenarios with more available for free download after release.
3. This is a test release, which means the game isnt finished yet. It definitely still has bugs. We greatly appreciate your help in finding and fixing them all!
Apart from these restrictions, this is a fully functional release. Players can use all of the dozens of vehicles and deployable items in the game. The two included scenarios are "Ice Field" and "Raid". Ice Field takes place on the frozen wasteland of Arcanum, a once-inhabitable planet orbiting Luytens Star that has had its climate devastated by bombardments from the Mu Arae Entente. The Raid scenario takes place on an inhabitable moon called Hopewell. Hopewell orbits a gas giant in the Wolf 9773 star system. Almost half of the moons surface, called "The Scorch", is a radioactive Hell created by the destruction of an antimatter station that used to orbit the gas giant. The remainder of Hopewell has recovered from this disaster and is once again beginning to flourish with vegetation and a growing human population.
This release includes everything needed to connect to servers and play on the Internet or on Local Area Networks on Windows, Linux, and Mac OS X Tiger. It also includes everything needed for players to run their own public or private servers. This is important since there will be a limited number of public servers made available by TBG. We plan to run only 6 servers for this public test release so players might need to run their own servers if they want to play frequently.

Mega Mario is a Mario clone + blood. In the game you play Mario and your task is to free his brother Luigi, who was captured by the evil Bowser. Mario is controlled by Keyboard or Gamepad using the Arrowkeys to walk, Space / A to jump and CTRL / B to run/fire. After reaching a castle the game is saved and can be continued at any time by clicking on "Load Game".

Mega Mario also features a blood-mode, which makes killed enemies spread their blood all over the level! And if you have fun to create your own levels after completing the game, you can use the Level-Editor (read "Editor.txt"). For example you can send me your best levels and perhaps Ill build them into the game!