Hey so i worked on this game! And if you join the game right now the extra's menu should have a new map with alot more to do for the devtest level! Also i've noticed you had your roblox graphics down to low, try pressing the button with the 3 lines that appear infront of you and turn your graphics up (it allows you to see further and not have the ground vanish when you go too high) (if your computer can handle it!)
u should set the graphic level of roblox to not automatic because it decreases when you're fps is under 60 and increases if over 60fps and because of that changing graphics make u drop fps which makes performance worse
im actually working on a tunneler multiplayer game! the actual guy who made tunneler (homemade_meal) gave me permission to make a multiplayer tunneler game :]
