1843 aka 18FR-RCE, more familiarly known as 18Fried Rice, is an 18xx re-envisioning of 18FR. Significant differences include a ninth company, an extended train roster, a slew of map changes, an additional private company with a new power and tweaks to the other privates, changes to the track-tile manifest, etc. However this remains a fast train-rush game. Trains are expensive and they move quickly even when player companies aren't buying them...and players will be buying non-permanent trains out of pocket...
The primary goals of 1843 were to reduce the bankruptcy rate to well below 50% of games (versus the near 100% rate of 1830 and 18FR when played aggressively) while also providing for a volatile and dynamic game with good texture and more interesting train and track management sub-games (especially in the late game).