A beach dad in socks and sandals, a metal detector, and eight places further and further back in time. He sweeps, it beeps, he digs, and a find comes up out of the sand. Sell your finds to Sal for $CASH, and upgrade his gear to reach the next place.
Hold 50,000 $CASH in your wallet to play. It is never taken.
Eight places back in time

From today's boardwalk to Dino Sands, 66,000,000 BC. Each place has its own finds, its own storm, and a new outfit for Dad. Socks and sandals, always.

A better ride takes him further back: the ground drops away, and down he goes through the eras.
Storms take the flags you leave
Every place has its own storm, about every 6 hours. It takes every flag nobody started digging. A dig already going is safe.

High Tide, Boardwalk Beach. The water comes up the sand, and the flags float off with it.

Spring Tide, Skull Cove. The sea rolls over the beach and carries off every flag still standing.

Dust Storm, Neon Motel. A wall of dust rolls over the motel and buries the flags.

Blizzard, Frostbite Tundra. Snow drives in and drifts bank up over the flags.

Ash Fall, Ashfall Forum. The mountain blows, and the ash settles over every flag.
Sell to Sal

Sal's Gold & Pawn stands in every era. He names his price, the treasury sets that $CASH aside, and he pays exactly that, straight to your wallet.
Crates upgrade his gear

His detector, headphones, spade and ride each have eight levels. Every crate takes one piece up one level.