tool bars from level editor

how can i make level editor mode in smb1 gatete engine? because i use game maker studio 2, help me please.

New Video is Coming soon by Me #goanimate #vyond #wrapperoffline

My game in 50 seconds #indiedev #Gamedev #steam

Me and My Female Clone Looks for July #goanimate #vyond #wrapperoffline

🆕🔥New mechanic! Place wet souls into sponges to cool down scorching terrain and make your way through!

Sneak Peak of My 17th Birthday Special Video #sneakpeak #goanimate #vyond #wrapperoffline

Intruducing My OC Character Benjamin Mark(A.K.A Stephanie Gavin's Crazy Fan) Read in The Article to learn More Information About Him. #goanimate #benjamin #benjaminmark #vyond #wrapperoffline

I've created a new form of parkour in Weefager! What do you think?

The Logo on my Mario Maker Game/UniMaker Mod