Separate installation from loading
A browser must receive the game’s files before it can display the forest and run its movement. On later visits, cached files can help avoid fetching everything again, but caching depends on the browser and retained site data. If you are on a limited connection, judge the actual loading behavior instead of treating “no download” as a measurement of data usage. No fixed transfer size is promised by that phrase.
Separate caching from saved progress
ORBIT’s offline game files and its local best scores serve different purposes. Cached files let the browser load the game shell without fetching each asset again. Local progress holds discoveries, records and preferences. Clearing site data can affect these stores, so removing browser data is not equivalent to merely removing a desktop shortcut. A score image is another file you may choose to save, but it does not replace either the game cache or saved progress.
Decide whether the format fits
A no-installer game is useful when you want to open a link and try the interaction with little setup. If you need offline access, first load ORBIT online, check the available readiness information and test it in the intended browser. If you want a home-screen entry, that is an optional additional step on supported setups. Evaluate three separate questions: can I start without installing, do I have the files needed offline, and will my progress remain here? Answering them separately gives a clearer expectation than the marketing phrase alone.