Programming in GameMaker

Share your creations!
Is it weird I made a story before I even started coding the game? Also added movement and a health bar so yay!
I just lost 36+ hours of work for my entry in the game jam.
Great.
Welp time to get back to work on a new game. Game title The Lost Ones
I feel dumb for asking but I've been trying to play test on opera gx with html5 but it won't run on it only on chrome and safari. Any suggestions please.