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What can it do?
Lots of things! See the features page for an up-to-date list of the current features. Also, take a look at the screenshots page to see for yourself the kinds of eye candy OGRE can pump out.

Is OGRE A Game Engine?
No. OGRE can be (and indeed has been) used to make games, but OGRE is deliberately designed to provide just a world-class graphics solution; for other features like sound, networking, AI, collision, physics etc, you will need to integrate it with other libraries, something several frameworks have done, and we have a collision / physics reference integration library as an example in our distribution.

Why? Well, one reason is that not everyone who needs a 3D engine wants to make games, so we don't assume that you do - you can use OGRE for games, simulations, business applications, anything at all. Secondly, even within the games industry, requirements can vary widely; for
example a MMORPG will need a very different kind of network library than an FPS, and a flight sim will need a different kind of collision / physics system to fighting game. If OGRE included all these features, we would be enforcing a particular set of libraries on you, with an
inbuilt set of assumed requirements, and that's not good design. Instead, we provide a very integration friendly API and let YOU choose the other libraries, if you want them. Many experiened game developers have expressed their approval of this approach, because there are no
inbuilt constraints. It can be more daunting for newer users who just want to build another FPS-style game, but for those people there are a growing number of existing frameworks using OGRE which provide a complete solution using a given combo of libraries; but it's important
to realise that OGRE itself will always remain separate, flexible enough to be incorporated into any of these. The principle is of collaboration and integration with other libraries, rather than
assimilation of them, a standard tenet of component-based design.

Why should I consider using OGRE (rather than the other zillion 3D engines out there)?
Many other engines, whilst technically impressive, lack the cohesive design and the consistent documentation to allow them to be used effectively. Many of them have long features lists, but have the feel of a bunch of tech demos lashed together with twine, with no clear
vision to hold them together. Like any other software system this becomes their downfall as they become larger. Most other engines are also designed for one particular style of game or demo (e.g.
first-person shooters, terrain roamers).

OGRE is different. OGRE is design-led rather than feature-led. Every feature that goes into OGRE is considered throughly and slotted into the overall design as elegantly as possible and is always fully
documented, meaning that the features which are there always feel part of a cohesive whole. Quality is favoured over quantity, because quantity can come later - quality can never be added in retrospect. OGRE uses sound design principles learned, tried and tested many times
in commercial-grade software - the object-orientation mentioned in it's moniker is just one of those approaches - frequent use of design patterns is another. The core development team is kept deliberately small, and all of its members are veteren software engineers with many
years of real-world experience. Patches are welcomed from community, but they undergo a strict review for both quality and cohesion with the Ogre philosophy before being accepted.

OGRE does not assume what type of game or demo you want to make. It uses a flexible class hierarchy allowing you to design plugins to specialise the scene organisation approach taken to allow you to make any kind of scene you like. Want to render indoor levels fast? Fine, use the BSP/PVS plugin scene manager which has already been written. Want an outdoor landscape? Again, use another plugin scene manager. The rest of the engine continues to function exactly as before.

So the short answer is - if you favour design quality, flexibility and clear documentation, choose OGRE. You know it makes sense. ;)

Is it really free?
The Ogre source is made available under the GNU Lesser General Public License (LGPL), which basically means you can use it however you like as long as release the source for changes you make to the core engine if you distribute your product. The source to your application or to new plugins you create does not have to be released (although it would be nice if you did). See the licensing page for full licensing terms.

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Aggressors: Ancient Rome is finally here!

The new 4X turn-based strategy developed by Kubat Software studio and published by Slitherine is to be released on August 30th.

Aggressors: Ancient Rome is a complex 4X strategy with a great depth and here I would like to give you a quick insight into what is hidden under the hood.

We tried to recreate the ancient era Medditerranean Sea, circa 280BC, to be as historically accurate as possible. We used historical sources to design the map, create an original setup and the web of relations between the ancient cultures. There are 20 playable factions, each with their own characteristics and objectives, ranging from small nomadic groups on the margins of the known world, to quarreling Greek city-states, to large empires of Seleucids or Ptolemy. And of course, the rising Roman Republic.
The original setting can be adjusted by using 7 difficulty levels, but you can also set a different difficulty level to individual AI players. There are also great many settings to customize the look of the map, by using various overlays, unit size, terrain details, etc.

Game UI

The game features a multitude of mechanics that react to each other but much is hidden under the surface in order not to overburden the player with too many details. The two tutorials (basic and advanced) together with a robust system of game hints and tooltips and the resourceful in-game library should provide a level of detail as anyone can need.

The game features many typical 4X concepts that were used as solid foundations for the new and original ideas. The basics include resource management (10 types of resources that are acquired in mines, harvested on tiles and generated in cities);different types of governments that greatly affect the internal political situation and economy; complex diplomatic relations ranging from simple war-peace relations to 11 types of treaties, 2 military pacts and even to high-level political cooperation in confederations, federations and even annexation; as well as scientific advancements that affect political, military, social and cultural life of the empire.

Aggressors' library Wildlife

Using these stepping stones, we incorporated a number of new features and game concepts to enhance different aspects of the game. For example, the economic situation can be greatly affected by trade that allows the player to use 6 different types of negotiations; the internal political situation is affected by happiness both on local and national level; and the foreign political ambitions by maintaining good or even exceptional relations with some key players.

The territorial conquest is not only determined by the strength of the armies but a number of other factors that have to be aligned. Proper supply lines have to be maintained to keep the forces strong and healthy, army morale of the battle units affects the outcomes, loyalty of newly conquered cities have to be considered when using them for recruiting new and healing existing units.

New lands and cities can be obtained by force but the game also allows more subtle ways such as using Influence to incite unrest in foreign cities or by laying siege to enemy cities.

Detailed view

Great emphasis was put on the tactical side of the game. There are 5 different army types in the game (Roman, Greek, Carthaginian, Persian and Barbarian) that have their own distinct properties and traits. They can obtain more than 20 different improvements to enhance their fighting skills. The combat itself uses high-level tactics and combines more than 10 factors that affect the battle outcome starting from terrain bonuses and penalties, to army morale, loyalty, general morale, sufficient supplies, battle readiness, experience and many others. All these factors are taken into account in every single battle and the final outcome is derived from them.

Population's satisfaction Sthe Mediterranean

The historical scenario offers great variability in terms of original setups: different strategies that are required or challenges that will test your ability to lead a nation. The AI is well aware of all the game mechanics and is capable of landing expedition forces from the sea, raiding trade routes, building strong alliances and even recognizing good and bad trade deals. We also introduced various “personality” traits to the AI behavior such as enemy of my enemy is my friend or seeking revenge even after decades of relative peace.

To add more variability to the game, we also included a customized world builder into the vanilla version. Player can adjust the size, climate and land mass of the world and define how populated and developed the state infrastructure will be at the beginning. Two additional settings define if the starting conditions will be similar for all nations or not and if the player starts with an advantage.
The customized world builder uses a dynamic map, just as the historical setup, but it is not a flat dull world. We use an algorithm that creates a contour map based on terrain type detection and so is able to produce very real-looking maps.
The maps can be further adapted by using the In-game Editor that allows you to change map patterns, terrain and terrain features (rivers, roads) and territories, add or remove cities and units, as well as define new diplomatic relations, mutual attitudes or known technologies.

Ready to fight!


Above all that, the game supports modding – everything is in an editable and self-explanatory format on both levels – scenario (or game) level and mod level. Player can create his own maps with units, roads, rivers and nations (with all related attributes such as personalities, relations, technological development), random events, objectives, victory conditions, unit names, etc. Most of these things can be easily edited directly by using the in-game editor.

Aggressors has a full Steam workshop integration where additional content created by other players will be available (there are already items made by the beta testers to be shared), and it is easy to download or publish your own content.

The game offers deep gameplay with plenty of variability to satisfy all kinds of players. You can find much more in-depth information in the Dev diaries that we have been publishing in the past couple of months and you can also look at some of the many preview gameplay videos on YouTube.

The game will be available from 30th August on Slitherine website, Steam and Gog.

We trust that you enjoy the game and spend many fun hours playing it!

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After long and busy winter we finally managed to write an update about Aggressors’ latest developments. There is plenty of news - new features and updates...

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Comments  (0 - 10 of 20)
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Forsete
Forsete

This page is awfully devoid of Shrek memes.

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Fenimore
Fenimore

Why Not Troll Engine?

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TheUnabridgedGamer
TheUnabridgedGamer

Venetica and Garshap...

Seems like this engine hasn't gotten to be in a title to do well by reviewing standards.

Perhaps sometime soon, it'll be used for something that could be the PC equivalant (in success level) of Uncharted 2?

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koburamoe
koburamoe

I dont see how those games getting bad reviews is the graphics engine's fault .
They were DECENT games , for cheap prices decent .

Plus this engine is at least free and open source , unlike the others where in unreal engine 3 you need to buy a full license tog et acces to the source code and modify the engine itself .

Pretty decent for the price : FREE and unlimited acces.

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Lex1202
Lex1202

Something is wrong with the info. Since version 1.7, the engine is on an MIT license, not GPL

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x3nu
x3nu

Umm, I'm not sure I follow. If your asking if there is a game engine with quality to that of gamebryo that's free, that would be no, or at least to my knowledge.

If you want to download Ogre, just go to the site.

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J.Sheppard
J.Sheppard

The fact that the Ogre software ties into "speed tree" is also helpful it aids us when placing and designing our forested maps that would take a year to complete if you were doing it individually.

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x3nu
x3nu

Great engine, i've been testing it and it is capable of producing some decent graphics. Much better than irrlicht or any other open source engine out there.

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Mejikojin
Mejikojin

How did you download and do you know any easy to use engine with the same level desing as gambryo thats free to download

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