When comparing Zero-K vs Xonotic, the Slant community recommends Xonotic for most people. In the question“What are the best open-source games?” Xonotic is ranked 2nd while Zero-K is ranked 23rd. The most important reason people chose Xonotic is:
Open Source games are not always known for their high-quality graphics. This can often be caused by the games being designed by committee in that many different people may work on the graphics, even in the same areas, which can cause plenty of inconsistencies. Luckily, Xonotic does not suffer from this problem as the whole of the game has consistent looks that are actually quite impressive.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Multiplayer online battles
You can create your own multiplayer battles, even password protected ones for playing with friends only.
Pro Expansive tech tree
Land, sea, and air. Choose your favorite play-style and use the appropriate tech tree. There are tanks, bots, walkers, planes, helicopters, boats, and submarines available to you.
Pro Flat tech tree
All units are available from the start of the game. There are no unit upgrades and you don't need to build certain buildings to reach the next level of unit.
Pro Awesome graphical effects
Despite it is an open source engine, the graphics are fantastic.
Pro Cross-platform game
There are versions for Linux and Windows. The easiest way to play in Linux is using Lutris platform.
Pro Impressive graphics, especially for an open source game
Open Source games are not always known for their high-quality graphics. This can often be caused by the games being designed by committee in that many different people may work on the graphics, even in the same areas, which can cause plenty of inconsistencies. Luckily, Xonotic does not suffer from this problem as the whole of the game has consistent looks that are actually quite impressive.
Pro Cross platform
Mac/Linux/Windows support.
Pro Many game modes
Includes all the expected options like Deathmatch and Capture the Flag, as well as more novel modes like Key Hunt.
Pro Fast-paced action
Pro Interesting weapon design (for an arena shooter)
All arena shooter basically use Quake or UT weapon system. However, Xonotic has an interesting variety of weapons (larger selection than most) with elements from both UT and Quake but added some of their innovative ideas. Some of the weapons have a bit of overlap and felt a bit forced, but other weapons really made the game stand out.
Pro Play easily online
At any time, you can find people playing on the net. No special configuration needed.
Pro Not demanding on the system
On integrated HD4600 graphics ~120 FPS on normal settings.
Pro Multiple floor levels gameplay
The game permits players to move across multiple floor levels, which permits more dynamic game play.
Cons
Con Bad visual design
Obviously this is an open soruce project so nobody expects AAA level gfx but this one looks exceptionaly bad. Some of the weapon effects are hideous to look at. Simple things like UI buttons and color scheme seem to be visually out of sync with the way unit models and the map terrrain look.
It seems like a mishmash of visual styles which is probably a result of many different contributors of varreying skill levels.
There definately are visually consistent and pelasant ot look at open source games so The visual design of the game needs to have some sort of strcut guidline or rely primarily on the taste of a single individual from the ZK team.
Con Flat balance
The economy is very close to a Total Annihilation economy (despite all the changes they introduced) but the unit balance resembles games with harder unit counters like Warcraft and Starcraft. In Blizard games, there are different ways to limit what unit type or kind you can build at any stage of the game, like tech structures which the opponnet can scout.
In Zero - K this is not the case since there are no tech buildigns focusing the player on a certain unit type which can be scouted. You can make all units at all times. The gameplay design feels amateur and not thought through From the broadest perspective. It also manages to miss the advantages of the Spring engine and mixes the need to micromanage units that counter each other with big Area of Effect Weapons.
Con Campaign can be very hard and you can get stuck
Some levels are very strange and difficult like fighting with almost invisible enemies.
Even at easy they are hard to beat and you must beat them in order to progress in campaign.
Con Few players
Very few players on the servers ate as it happens 5-9 people!
Con Boring AI bots
Bots are not the most performant opponents in Xonotic. They often run around the same paths, and sometimes even stand still on spots for apparently no reason.
Con No actual addons repository
Cannot download custom maps through the actual game. Instead you have to download maps online and then put them in a directory.