My game is not opening, and I was wondering if it`s my computer or?

can you play this kind of games in fullscreen on pc?

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That part of the tutorial went by too fast and it didn't show me how to clean the tables....so how do I do that?

for a game all about menuing, the framerate is really annoying and gives me a headache, are the menus really sluggish in all of kairosoft games or is there an issue with my computer?