Oosh said: Firstly, set up a dummy account and log in from a separate browser or private browsing window so you can test your game in real time. This is more accurate and far more convenient than logging in and out constantly. Secondly, when you say "re-joined as a player then saw nothing but darkness." does that mean you can't even see a token? You'll need at least one token, on the token layer, assigned to a player and with "Vision" turned on in the token's DL settings, or they will not be able to see anything at all regardless of light levels. Any player who joins your game must have permission on at least one sighted token on any map with Dynamic Lighting, or they will get darkness. That last bit was the solution to my issue, thank you.