Dolna Rails: Idle Fun Park is a free 3D idle theme park game that you can play online in your browser with no download. Joy has 100 coins and his grandfather's old fair plans. You walk around the park yourself: buy the lot, build a swing boat and stand at its booth to send the first riders off.
Families queue in front of every ride, and a ride only starts when someone stands at its booth. Pick up the tickets beside the booth, fill your hands at the snack carts and stock the kiosks, then drop the wrappers guests leave on the lawn into a green bin. Build a carousel, teacups, a Ferris wheel, bumper cars and a drop tower, hire ride operators, stockers, sweepers and a ticket clerk, and open Coaster Hill next door with the Dolna Rails Coaster.
Like walking around your own business? Try Handi Hustle, a 3D idle cooking game, or Shop Para, a 3D idle shop game.
Yes. Dolna Rails is free to play in your web browser, with nothing to download, install or buy. Everything is paid with coins you earn in the park, and signed-in players also earn GamesYap points for each new ride or kiosk and for five achievements.
Version 1.0.0Nov 6, 2026
first release: a walk-around 3D fun park with 12 rides that swing, spin, climb and drop with the guests on board, 8 snacks made at carts and sold at kiosks, wrappers to clear to the bins, ride operators, stockers, sweepers and a ticket clerk, levels for every ride, cart and kiosk, two parks on one street with traffic and people on the pavements, day and night under coloured bulbs, away earnings, CC0 people models and original rides, music and sound.
No one yet — be the first!
No one yet — be the first!
Yes. The game runs in the browser on phones, tablets and computers, upright or sideways. On a touch screen you drag anywhere to walk, and a small joystick ring shows under your finger. On a computer you can drag with the mouse or walk with the arrow keys or WASD.
A ride boards only when someone stands at its booth: you, or a ride operator from the HR room. It leaves when every seat is full, or a few seconds after the first rider got on. If guests wait in a line, a short hint at the top of the screen tells you which booth to go to.
Build new rides, because every ride sells tickets for more than the one before and brings guests in faster. Level up rides for more seats, keep the kiosks stocked so riders buy snacks, and keep the lawns clean. Later, Coaster Hill next door has rides with much bigger tickets.
Operators each run one ride, in the order you built them. Stockers carry snacks from the carts to the kiosks, sweepers take wrappers to the bins, and the ticket clerk brings every coin pile to you. With operators and a clerk, your park keeps earning while you are away, at a quieter pace for up to eight hours.
