Sonic Mania Android By Thunder Playz Free [UPDATED]
Note: “Sonic Mania” is an officially released, paid Sonic the Hedgehog game (originally by SEGA). “Thunder Playz Free” appears to refer to a third-party Android release or fan-made port that packages Sonic Mania-style content under that name. The following is a concise, informative composition covering what such a package typically is, what to expect, useful details, and precautions.
The s that looks like an f is called a “long s.” There’s no logical explanation for it, but it was a quirk of manuscript and print for centuries. There long s isn’t crossed, so it is slightly different from an f (technically). But obviously it doesn’t look like a capital S either. One of the conventions was to use a small s at the end of a word, as you note. Eventually people just stopped doing it in the nineteenth century, probably realizing that it looks stupid.