Programming in GameMaker

Hi, it will be quick, I need to make sure that when a cube collides with 2 others these are eliminated (or something similar to the puyo puyo) thank you very much for reading
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я сделал свою игу про ютуберов! пока что демо-версия)
Hey, I was wondering how to start making a game in this app. I am trying to make a fan made game and I was wonder if someone can help get me started on how to do it, like tips and pointers on how to make games in the app.
Someone do a highscore system that really save the hi score in navegator?
I really dont know how do this
Finally making some real progress on ideas and game design. Although the sprites could use some work...
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