Join the largest TFM-tournament in the world!

[Slycrow]

With more than 200 participants we are proud to announce the largest Terraforming Mars-tournament in the world: the Dutch Open Terraforming Mars.

And the Dutch Open Terraforming Mars 2026 is extra special because we will play with a custom expansion: Delta Project! The expansion is exclusively available to participants to the Dutch Open. Registration is currently open but there is just a small amount of tickets remaining, so get your spot asap.

The Dutch Open takes place in the Fletcher Hotel in Nieuwegein, The Netherlands, on 26 September 2026.

More information and a HowToPlay-video can be found here: https://terraformingmars.nl/delta-project/

Registration for the Dutch Open: https://terraformingmars.nl/

[stillframe]

A large in person tournament sounds like fun. However, the use of fan made content means I cannot consider this a Terraforming Mars tournament. It is a different game.

Is the Delta Project expansion actually good? Of course I cannot fully tell without playing it. I can see that it incentivizes tag diversity. Probably this would deter specialization, which would effectively nerf several corporations (perhaps Phobolog most of all). I suppose it could be good, but it still isn't Terraforming Mars.

[sozabaru]

A large in person tournament sounds like fun. However, the use of fan made content means I cannot consider this a Terraforming Mars tournament. It is a different game.

Is the Delta Project expansion actually good? Of course I cannot fully tell without playing it. I can see that it incentivizes tag diversity. Probably this would deter specialization, which would effectively nerf several corporations (perhaps Phobolog most of all). I suppose it could be good, but it still isn't Terraforming Mars.

I played the expansion and it didn’t change the game materially