There are a number of games made for the Spring Engine. Some of the more popular ones are listed below, sorted by their terms of use.

Freeware/Open Source

These games are all free to download and play and may be open to modifications, however, be sure to read the licenses before doing so.

Zero-K (FOSS)		Spring: 1944 (CC-BY-NC)
Zero-K is a fast, competitive game with a focus on a streamlined economy and advanced interface that takes the focus off tedious tasks and back on the action. A huge roster of interesting, unique units and a variety of unit abilities provides tremendous tactical and strategic depth to the game. [Download link]		Spring:1944 is a WWII themed game with four fully functional sides (US, Germany, USSR, Britain), period-accurate units and strengths. Realism comes second only to creating a game that is fun and accessible to play.
Evolution RTS (CC-BY-NC-ND)		Kernel Panic (both proprietary and FOSS content)
A new war is brewing. A violent conflict, between the Six Colonies, each one convinced that it was in the right, each one sure of its own ability to defeat its enemies. But they need Generals. They need soldiers. They need you.		A game based around combat inside a computer, with 3 unique sides: the System, the Hacker and the Network waging war in a matrix of DOOM! No resource economy exists in KP, with the only constraints being time and space.
Conflict Terra (public domain/GPL-2)		Spring Tanks (undecided, some obscure free license)
Based around the idea of a fictional faction fighting for the domination of Earth, Conflict Terra hopes to achieve balanced, interesting, intuitive and above all fun gameplay that tries to break some of the norms present in other Spring games.[Download link]		Some guys decided to attack each other with tanks and you can be one of them.Build-in Single Player!

Proprietary

These games may or may not be free to play. Modifying their content (i.e. the art assets) is not allowed without the game authors explicit permission, although the code is GPL and some games (P.U.R.E.) include large GPL-friendly content collections.

	Gundam RTS
	Set during the One-Year War in the Universal Century timeline of the Gundam Metaseries, Gundam RTS features fast, intense mech combat gameplay in a truly Gundam style.

Star Wars: Imperial Winter		The Cursed
A Star Wars themed game set in the troubled post-Return of the Jedi era, SW:IW features over a hundred units for the fractured Galactic Empire and Rebel Alliance fighting for control of the galaxy.		The game is about bones, undead, demons, space marines and magic settled in a futuristic environment. It is a fresh mixture of gameplay elements from many popular RTS games like Starcraft and C&C.

TA-derived

At least parts of these games are derived from data of the Total Annihilation game (copyright Atari). As such, their distribution is potentially in breach of copyright laws and therefore not officially endorsed by the Spring RTS team.

Balanced Annihilation		Tech Annihilation
Balanced Annihilation (BA) is currently the most popular game played using the Spring engine. BA is a mature game and new versions feature only minor balance tweaks.  BA gameplay develops in stages of progressively heavier units with a growing economy. Many strategies are viable in BA, including focusing on map control, aggression, defense, air power, sea power, or mobility.		This Game is bigger, greater and more epic! Tech your Commander from a tiny Commander to a Galactic Commander! (by [BoS]Senna, currently no homepage)

NOTA		XTA
Not Original Total Annihilation is a rethink of the Total Annihilation universe with a focus on strategic, base oriented gameplay. With its revised unit scale, huge battles erupt engaging hundreds of units and scores of unit types. NOTA’s completely rethought air and sea gameplay forces participation in all elements and places the tide of conflict in your hands.		Originally developed as a Total Annihilation game by the Swedish Yankspankers, XTA is the Original Public Game released with first versions of Spring. Development of this game by the SYs has stopped a while ago, but it is still played and actively developed by the community.

Installing Games in Spring

Quite a few of the games listed above come with standalone installers – which makes things easy (check their website to find out!).

In some cases however, the game will only distribute a “game-file” – in this case you will need to have an installation of the Spring-Engine, and place the file in the …/Spring/games/ folder.

These files are a “.sd7″ or “.sdz” files. To install this files move them into (Unix) ~/.spring/games or (Windows) “My Documents\My Games\Spring\Games”. Some games have multiple .sd7 or .sdz files for single player games modes or mutators. These should be installed in the same directory, just like a game.

To play a game, you also need a map.

Still not enough Games? There are some more, not listet here or make your own Game!