I really like the concept, it reminds me of those cheap asset-flip games for Android, one thing I do not like, however is that all the resources are just solid colors, I think the game would be better if they had actual names and textures, for instance, the purple resource could be wood, and the gray resource could be stone/cobble.
All those "coming soon" signs make it seem like the game is nowhere near finished, but that's OK, you only had 21 days.
Thanks for your feedback. The game is just beginning and there is still a lot planned for the future. Unfortunately, I still have little experience with 3d models and did not manage to add sensible textures to them quickly. It is a good idea to rename the resources in the future. After the minetest GAME JAM I will continue to work on the game