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Hydrothermal is a city building game where you create a space colony and ward off alien invaders. Control every aspect of your colony's layout, including zoning, building placement, and terrain features, all with the ability to conquer more land for expansion. Adjust the city details by balancing the budget, passing/repealing laws, and allocating extra resources into six areas using the balance of powers screen. Don't forget to build and manage an army though, aliens attack from time to time! Hydrothermal's addicting gameplay and a classic 2D with over 50 unique buildings, Hydrothermal will keep you entertained for more...

What's New

Version 1.20:
  • Added non-fixed width fonts
  • Fixed cursor not lining up with clicks
  • Project cleaned, more stable
  • New affiliate links
  • Fixed misspellings
  • Requires OS X 10.7 or later


  • OS X 10.7 or later

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Anonymous Member IconReview

Not to bash what looks like a good effort... but this game is basically sim city... with worse graphics, gameplay, interface and spelling.

Simcity 2000 beats this hands down, not to mention the later games. Your money is better Spent on SimCity 4 and/or Tropico or some similar game.

Additionally: This game looks like it hails from the MSDOS era of games, the user interface is painful, and the graphics are... somewhat subpar.

This game definately does not fit with the "mac experience" or expectations I have of Mac OS X software. Additionally, the 15 minute limit is extremely limiting, at least move it to 30 so someone could actually learn and then play the game a little. (That is if you still want to play after being turned off by the problems listed above).

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Version 1.03
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Current Version (1.x)


Downloads 6,623
Version Downloads 20
Type Games / Simulation
License Commercial
Date 04 Dec 2013
Platform Intel 64 / OS X
Price $9.99