Hi,

No investment needed. I didn't spend any amount for those games. The very few games what are really free play to earn.

Gods Unchained

You get 140 Plain cards at the beginning (Plain cards are non-NFT cards). you need 30 of them to build a deck. Later on, when you get 2 or more, you can fuse them and they become NFT cards (after that, you can level them further).

You can play maximum 10 daily ranked battles, you get fragments after wins. Higher your level (max 12 categories are there), higher the fragments you receive. At the end of the day, you get GODS token for that. In my first month I played almost every day. I could collect around 30 GODS token. Daily 1-1.5 is not hard to reach + you can sell cards (only NFTs, not the free Plain types), what is also some income.

for example, today i played 7 battles so far, won 4 (1hour and the day is over), so i will get nearly 1 GODS token. (it's around $0.25-0.30)

next to that, there is another kind of levelling, and you receive different rarity packs (again, only with Plain non-NFT cards). you see in this picture, i am on LVL60.

There is a weekend ranked, what includes the first 18 battles from noon Friday till noon Monday UTC. Based on those results, you got a chance to win more packs, including extension packs, as well.