If you add a couple html pages with SEO related entries and content, and have a decent sitemap file, and add some bot restrictions and link redirections in a htaccess file, you can do just fine.
Having a decent loader, indicating progress will retain most of the fickle users looking for something they potentially are looking for in your site.
There is a whole range of specific users, google and several other larger search engines, which thrive on commerce, into getting that user to the product he or she wants to buy ASAP, .... so google might get some money through their advertising and referral systems.
But in reality, if a user is looking for something they intent to find, like a game, and the site, however slow, is engaging and not letting the user in the dark (waiting without feedback) then the user is likely to wait patiently if things are not to excessive.
Ofc, you have users wanting everything on the fly, and there is a big chance some of these users will complain after a second or two and leave.
Gladly, these are also often users having spent good money on a decent internet connection (one of the reasons they tend to complain quicker about slow loads)
And, as a fact on the internet, if your host is slow (offering the download), then even fast connections download slow. So having a good hosting package is a must if you use heavy loading sites.
This all is assuming that you're counting on a search engine as the way to attract find new visitors.
I would assume, that if your intentions are to get a larger visitors base, you would be actively spreading your links on a wide variety of pages and platforms.