Upgrade everything ... graphics WYSIWYG
A seaports idle clone. Micro-manage early, then sit back and relax. Ads are optional, and no in-game buys, so no money lost! Just the bare mechanics (v0.2), but could be great! Needs a way to unlock different graphics (more ships, trucks, cranes) -- double piers?
And geese! The seabirds flying over is thoughtful. 👏👏