Collect and sell resources, maximize profits & upgrade your Harvester Author Comments: Retro Resources puts you into the action as the Harvester, collecting fast-disappearing resources on a distant planet. Fill up on precious cargo, but keep your eye on the market Ã¢EU" some resources are worth more than others! Bring your haul back to base, then upgrade your Harvester to bring in even more. Don't just pick up resources willy-nilly Ã¢EU" keep your eye on the market board that shows prices, and go for the big-ticket items first. Remember: the market changes, too, so make sure the upcoming price is high for anything far away from home base!