LeftLane is a rehearsal tool for licensed drivers from right-driving countries who are about to drive on the left. You practice the moments where old habits fire: clockwise roundabouts, right turns across oncoming traffic, leaving a rental lot, and keeping left after a turn.
Ten scenarios are free forever, with no signup and no card. A one-time pass unlocks twenty more. It runs in your browser on a computer, tablet, or phone held sideways.
The sim needs a keyboard or a game controller, and this window is a bit narrow for the dashboard.
You can still try it, but expect rough edges.