Sim Mars

they need to make this game

Some elements of Sim Mars (i.e. Planet Terraforming) were incorporated into Spore's Space Stage.

SimEarth is probably where Maxis first implemented this concept.

The game had scenarios where you had to gradually turn a molten rock planet into an Earth-like one where terraformers were prominent. And it was much more fun than anything Spore had.

Sim Mars, from what I believe, was originally intended to combine elements from many other Sim games, while at the same time, adding realism with help from NASA. But then NASA dropped out for some reason, and Maxis was undergoing a ton of financial issues at the time. The project was dropped, EA bought Maxis, and by the time everything got unscrambled at Maxis, Will Wright started to try to revive the Sim Mars concept with "Sim Everything", which evolved into Spore.

I think...

I think simmars will be rejoined by maxis though a few people are still making some progress on it while they wait

Is this vid about the SC4 mod SimMars, or a never released separate game?

No it's was supposed to be a separate game that would of have a lot of success, but it's on hold because of The Sims 1 - 2 - 3 .

they should make a game like SimCity 4, except on the moon (with better graphics than MoonTycoon)

cool haha