Space Caravan: Aeropittura
About
Collect water and resources from passing asteroids, produce food, build new ships, protect your fleet from the attackers and make it safely home.
Just a quick note about the web version of the game... that one up there. I've tested it on my garbage pc and it works fine, so it should work on most computers from this decade, maybe even some from the last one. In case it doesn't the download version has options to lower graphic settings, so you could try that.