This app was mentioned in 3 comments, with an average of 1.33 upvotes
The game is 100% free!
You can download it for Android on the Google Play Store:
https://play.google.com/store/apps/details?id=com.elan.test&hl=en
or for PC/Mac on Gamejolt:
Project Title: Troposphere
Promotion Type: Feedback and Awareness
Promoter: Elan Gleiber (Project Lead, Designer, Composer, Sound Designer)
Download Free on the: Google Play Store
Other Link: Gamejolt
Description:
Troposphere is a resource management game set on islands in the sky in which players must collect resources to survive and expand their village. To expand, they must build bridges to other sky islands containing the resources they need. Since these islands exists within the Troposphere (the area of the Earth's atmosphere where all weather happens), they are prone to frequent natural disasters. To combat these dangers, players must build fortifications against these disasters before they reach a resource. Failure to defend can be a major setback in the player's expansion. The game is set in levels with goals for population, exploration, and time. Build and expand your village as fast as you can!
This game was made in 5 weeks in the Michigan State University Game Design Program.