Hi So I have made my first game and I wanted to have some feedback
on it and I would like honest feedback and things I could add to it.
game: Zombie Invasion - Roblox
I have spent a lot of time and work making this I hope to hear some feedback and things to add.
The map looks good. Only the gui looks very weird and it has not been scaled, which makes it look weird on mobile. And the design of the gui should also be worked on. In the game you only have to survive, each round which gets boring at some point. You could also create weapons that you can shoot the zombies and add more zombie game modes.
Its not really on the game but the thumbnail is just from the internet and you just added text 
Possibly the 1 thing to think about is how your audience would personally think on it, here’s what I would suggest:
The UI’s feel really off, I’d suggest changing & doing some experimentation on them
WHY THE HECK DOES A DART GUN SOUND LIKE A HEAVY DUTY SNIPER RIFLE (I still can’t get over that)
The Zombies don’t disappear after a certain interval of time, which can result in a lot of performance issues by the time you reach a later wave in the game (Just imagine 7,500 bodyparts just laying on the map not disappearing)
The map is alright, but it could use some renovations 
Overall, it’s good for a first game I’ll say that! But I do suggest that you take everyone else’s feedback (And mine) to learn more about how you can improve!
for your first game its pretty good but heres some stuff i recommend:
-Make a cleaner gui
-some zombies get stuck on things
-zombies will never chase you up stairs and they most likely will just stand right under you.
-disable sprint to make it more challenging