Completely batsh*t game and I love it for that. Extremely 90s. Main criticism is how insanely hard the game gets after around halfway through; never beaten it in roughly 20 years.
Gem system is bad. Gems needed for some upgrades and only way to get gems is to level up. There are no ads for it. So yes it's free but after you run out of gems to buy new restaurants expect replaying old stages again and again.
The overall game is super fun and with all the unique restaurants there is a large variety of gameplay... but it's a mobile game and is unplayable without spending money on gems after a certain point. Really unfortunate waste of a good quality game. Would be a godsend without microtransactions
At the time this was the best simulator in the world, today it lacks a lot of features that one would expect but 20 years ago this was the best of the best and I spent hours crashing over and over again, which was fun.