By finishing maps on DDNet servers, you can gain ranks and points.
Every time any player finishes a map, their finish time is logged to a file. These times are known as ranks. If you are in team 0, your times are simply referred to as ranks, but if you finish in any team (1-63), your times are known as team ranks. Some rank and team rank data can be viewed on the DDNet website as either Global or Regional ranks. 
Ranks (team 0)
Finishing a map in team 0 gains you a rank for that map. Team 0 is the default team a tee is assigned to when joining a server. Even though it is referred to as team 0, you can think of it as being "not in a team". If a group of tees is halfway through a map in team 0, you can cross the start line and catch up to them. This would not be possible of those tees were in a team, because you wouldn't be able to interact with them. This allows for players to "cheat" parts, or do what is known as team 0 skipping. For this reason, non-team ranks recorded for a map are usually much faster than team ranks, because they probably skipped a number of parts, taking advantage of being in team 0. If you have rank 300 on a map, that means you have the 300th fastest team 0 time for that map. You can check your rank on a map by going to your Player Profile, or by running the /rank chat command in-game.
Team Ranks (teams 1-63)
Before crossing the start line on a map, you can join a team by using the /team chat command. In a team, if one player kills they will be put back into team 0, so they will not be able to go catch up to the rest of their old teammates. You cannot join a team once any of the team members have crossed the start line. If you use the /lock command, you prevent anybody else from joining your team unless you invite them with the /invite command. If your team is locked, any tee who kills will result in killing the entire team, but it will keep you in the same team rather than placing you back in team 0. Finishing a map in a team gains you a team rank for that map. Since team 0 skipping is not possible in a team, the recorded team ranks for any given map are often a better representation of players playing the map as the design intended. If you have team rank 300 on a map, that means you have the 300th fastest time for that map in a team. You can check your team rank on a map by going to your Player Profile, or by running the /teamrank chat command in-game. It is not possible to gain a team rank for all solo maps and most dummy maps.
Global ranks is a term that refers to all map finishes globally. This includes finishes on every server from every region. If you go to the map pagefor any map, you can see the global ranks by default. This page displays both global ranks and global team ranks (referred to as "records" and "team records") for just the top 20 times for that map.
Regional ranks is a term that refers to map finishes across all servers in a specific region. If you go to the map page for any map, you can click on a specific region in the sidebar to see regional ranks for that map. For example, here is the USA ranks for the map "Sunny Side Up". These are the regional ranks for USA for just the top 20 times on the map.
Running the /rank command while connected to a server on any map will show you your global and regional ranks.
You earn points for finishing a map you've never finished before. DDNet has several categories of maps, explained by the list below.
- Novice - The simplest maps for beginners.
- Moderate - Moderate maps for intermediate players.
- Brutal - Challenging maps for advanced players.
- Insane - Very difficult maps for experts.
- Dummy - A second tee that you can control (known as a dummy) becomes deep-frozen, the goal is to move the dummy to the finish line.
- DDmaX - These are maps that existed on an old server called DDracemaX which existed between 2009 and 2014.
- Oldschool - Old maps that brings nostalgia to old players. These are old non-DDmaX maps that existed before DDNet.
- Solo - Play the map alone. No dummies or interference with other users (you can chat with other players).
- Race - Maps from the Race game mode, mostly made up of hook/unhookable tiles and focusing on the movement with the grenade launcher.
- Fun - Maps to have fun (no points).
Every map has a difficulty indicated by its star value. The higher the star value, the harder the map is. A map can have anywhere between 0 and 5 stars. Below is a chart of the different map categories and their point amounts per star value.
The point values for each category/difficulty are calculated as follows.
Points = stars * multiplier + offset.
According to this formula and chart, you can conclude that a Brutal map with a star value of 3 would be 24 points. A Moderate map with a star value of 0 would be worth 5 points.
You can check your points in-game at any time by entering the /points chat command. Your points are also displayed at the top of your Player Profile. The points listed on your Player Profile and by using the /points command are global. This means that if you finish a 15 point map twice on two different servers, you will still only gain 15 points.
Team Rank Points
If you look at your Player Profile, you'll notice next to your points that there is another section labeled Team Rank. The points listed here are an entirely separate points system from your regular and Rank points. You can gain Team Rank points by completing maps in any team (1-63) with a rank of 10 or lower. The Team Rank points awarded for these finishes are based on the chart below.
Your Team Rank points value might change if other players get faster times than you.
If you look at your Player Profile, you'll notice next to your points and Team Rank points that there is another section labeled Rank. The points listed here are an entirely separate points system from your regular and Team Rank points. You can gain Rank points by completing maps in team 0 with a rank of 10 or lower. The Rank points awarded for these finishes are based on the chart below.
Your Rank points value might change if other players get faster times than you.
Global and Regional Points
If you navigate to the main Ranks page, you can see a list of the 20 players who have the most points, rank points, and team rank points. You can click the top 500 / top 20 link in the top right corner to show 500 players instead of 20. These are global ranks, meaning they're the collective data from all finishes on all servers in all regions. If a player finishes a 15 point map twice on two different servers, their global points value will be 15. If you navigate to a regional ranks page, the page will display the 20 players with the most points for that specific server region. The points on this page are specific to finishes on that server. If you have gained 500 points on USA server, and 500 points on CAN server, your global points will be 1000, but the USA Ranks page will only show that you have 500 points. This works the same for rank and team rank points. For example, if you have a map finish that is rank 10 globally, and rank 1 on USA server, the rank points section on your Player Profile will display that you have 1 rank point, but the USA Ranks page will display that you have 25 rank points. If you finish a 20 point map twice, once on USA server and once on CAN server, the regional ranks pages for those servers will both add those 20 points. This means that by adding your points displayed on multiple regional ranks pages, the total number can be greater than your global points value. It is not possible to see your points or rank/teamrank points for a specific region unless your values are in the top 500.
- There is some map finish data that is not accessible through the DDNet website. This includes points, team rank points, and rank points of any regional server if they are not in the top 500, and all map finish data besides your best time and the date of your first finish for any particular map. However, all DDNet map finish data is available in CSV or SQL format at the bottom of the Statistics page.