itch.io

Press the "no thanks, take me to the download" above the price

You can play the first episode and gob 0 for free, then all the episodes are paid

They don't force you to buy it

No

Quit ragebaiting

It's just link that leads to the offical steam, google play store, app store page

Yes you're limited in this itch.io version, you can get it from steam

It literally says "my very first game" on the end tf do you expect

Install fbx

You import the asset into your scene then hold the asset node then press "create new scene" and it will show you a warning just press "new inherate (or something)" then save that new scene and then press a random object, then you will see a "mesh" button near the move (on mobile idk about pc). Press it then press the first one and change the sibling to something and you have your collision