GrimCo
Hero
At the end of the day, it's about player buy in. You can be very restrictive and not be accused of railroading if you are open and honest when you pitch the game to the players and they willingly self railroad themselves.If nothing else, reading this thread has opened my eyes to just how completely restricted a GM can make player choices and not be accused of railroading.
My short games (1-3 sessions and done) are railroads trough and trough. There is glowing arrow with "this way" sign before players at all times. But i'm open about it when i pitch players my ideas. Never been accused of railroading cause they buy into it. They agree to ride along, accept hooks and follow yellow brick road. If for whatever reason they decide to go off that road, well, i won't stop them. But they better be prepared to become very pro active and self motivated, cause i usually don't have wider world prepared and i'm improvising at the spot, which means i'm mostly reacting to their actions. There were few instances where i just stopped the game all together with some variation of : " Sorry guys, it seems you wanna do something else, i haven't prepared anything else beside this adventure we all agreed to play and my improv tank is empty today. How about we just stop playing and just hang out."

