For pure fidelity of the Mannheim–Rhine corridor, the I--- Train Simulator edition remains unbeatable due to mod support and LZB simulation (high-speed cab signalling).
The for Train Simulator (now Train Simulator Classic) recreates one of Germany's most strategically important rail corridors. This 80-kilometer (50-mile) stretch of track connects the industrial hub of Mannheim to Karlsruhe, featuring a mix of high-speed passenger services and dense freight traffic. Route Overview i--- Train Simulator- The Rhine Railway- Mannheim