I'm not familiar with Sonic Speed Simulator, so can you elaborate on the greedy aspects of the game? Just to satisfy my curiosity.
Starting off, the game is plagued with "FOMO". Fear Of Missing Out. I want to play as Werehog for example, since I am gay, but until Halloween happens again, you can only get them through spending real money, and only
when the game has them in a store.
Speaking of stupidity, this game really loves Nintendo and is inspired by their actions, thus, the digital-only game also contains artificial scarcity. There's a mechanic where, if you take enough steps, you're given a Chao Egg. This functions as a loot box, and in it are some stuff + three characters. Sometimes, there will be a finite number of a specific character allowed in the game, referred to as "stock". This is, as some may say, stupid
Speaking of that, this game would get banned on any all-ages websites because it loves grinding and always shows it. You start off in Green Hill Zone, and to move onto the following Zones, you need Rings and a certain level of "character mastery". The latter can be increased through either getting more characters (which is a very tedious process), or via leveling up the ones you currently have (a slow and expensive process, but not as tedious). For example, when I was in New Yoke City Zone, I was ready to move on to Hill Top. But, I needed to spend 1,000,000 Rings to open the gate, and have a Character Mastery of 10. The former isn't too egregious, maybe, but the other is much more difficult to get. I had to use the Auto Run option to have my character run around in circles for about 4 hours, so that I could finally unlock Amy. Of course, in some spaces 8 is less than 10, so I had to keep hunting.
Each Zone has a sort of lobby or starting area. Green Hill has the worst of it, but all of them are ridden with machines used to facilitate the mechanics of SonicSSimulator. However, at almost if not literally all of these, the game encourages you to spend real money to "speed up the process" of things.
I could get into more, but there's literally so much that it's hard to know where to start and stop.