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A retro multiplayer shooter

Teeworlds is a free online multiplayer game, available for all major operating systems. Battle with up to 16 players in a variety of game modes, including Team Deathmatch and Capture The Flag. You can even design your own maps!

Need help? Head over to the support section!


(posted by: Oy) | 2018-10-14
So with some delay here comes the 0.7.0 release. It comes with a new menu, 2 new gametypes, new skin system, spoofing protection, new maps, no further need for tileset border fix and dilate, and more.
Thanks to Sushi Tee and Zatline for the new menu, to choupom for the new skin system, to heinrich5991 for the anti-spoofing system, to Sonix and Zatline for the new maps, to matricks for the graphics fix and to everyone else who contributed to this release.

A complete list of changes can be found here.
(posted by: heinrich5991) | 2018-10-13
Same story as with 0.6.3 and 0.6.4, again we're doing a release to fix a vulnerability. If you're actively playing Teeworlds, you likely already noticed that a lot of servers were full of "(connecting)" clients. This was possible because you could forge the connection packet in a way that made it seem like it came from an arbitrary IP address.

Other than that, the release is mostly technical, allowing to build Teeworlds with the popular CMake build system and fixing a build error with gcc. Additionally, the initial connection handshake turned out to be unnecessarily slow: The client waited 500ms before sending the initial info for player name, clan, tee color, etc.

Go download it now!

It looks like the 0.7.0 release is also coming closer, so maybe this release will have a short lifespan.
(posted by: heinrich5991) | 2016-11-13
As with the 0.6.3 release, a reported security vulnerability motivated this release: This time, the security vulnerability is worse, attacker controlled memory-writes and possibly arbitrary code execution on the client, abusable by any server the client joins.

The changelog:
Bug fixes

  • Fix the above-mentioned security vulnerability in the client (ff25472).

  • Fix a read of uninitialized memory that is sent over the network, from the server (7dd463d).

  • Fix decoding of overlong UTF-8 sequences to non-invalid code points, leading to possible duplicate names (#1373, 205dbce).

  • Drop connected packets that come from a formerly connected server in the client (#1356, 2057808).

  • Use a different port for connless messages, increasing the difficulty of successful IP spoofing (7c43b76).

  • Make spoofing of server info packets harder (8af77b6).

  • Fix spoofing for vital chunks, and require most chunks to be vital (f457b58).

Other changes

  • Sort by player count by default, instead of server name (1b2a91f).

  • Add a cooldown on unpause (#1365, 56e366a).

Go download it now!
(posted by: heinrich5991) | 2015-11-02
A vulnerability in the current server-masterserver protocol was found that can cause servers to not show up in the server list anymore. Use one of the following methods to protect your server(s):

1) Apply this patch to your source code.
2) Use this script to patch your binaries.
3) Use this iptables rules by m!nus on your server (NOTE: Adjust the port if you're not running on 8303!):
iptables -I INPUT -p udp --dport 8303 -m u32 --u32 '0>>22&0x3C@18=0x66776572' -j DROP

NOTE: If you're using method 2 or 3, you won't be able to detect NAT issues anymore, they'll show up as "WARNING: Master server is not responding, switching master".
(posted by: heinrich5991) | 2015-08-24
Good news everyone!

We did it, Teeworlds is released on Steam!

Thanks to everyone who made this possible, for suggestions regarding the presentation of Teeworlds, for drawing the images, making the trailer, or contributing in other ways such as voting without your help Teeworlds could not have been released on Steam in that time span.