This is somewhat like an improvised Dice game integrated on a Monopoly board game. Its a good concept but if its just NFTs that will be given away and not earnings, the game may not convince someone to play.
As a player you may have to spend a lot of transactions to earn NFT. I'm not very familiar with Matic's gas but the higher Matic's price will be the higher loss you will also have.
"This is somewhat like an improvised Dice game integrated on a Monopoly board game." - you are 100% right on this.
But it is not NFT's that would be given away. Each time a player rolls the dice he could land up on
- A reward spot (that pays instantly. It could 1x,2x,3x,4x the roll bet amount)
- A chance or a community chest card (again this is a reward too - mostly 50%,25% of the roll bet amount)
- Normal spots (each time this happens, you would be sent LEE tokens to your wallet)
Now our plan is to distribute profits(at a later stage) to LEE token holders.
Now each normal spot in the board(16 of them) is a NFT and can be owned. More details here https://www.cryptopoly.pro/cryptopoly-nft
The highlighted ones are the ones that can be owned and is for sale.
If you own a NFT, you would start earning 90% of the roll bet amount whenever someone lands on that spot.
So if someone plays for 10 matic and if he lands on a spot you own, you would get 9 MATIC.
And regarding MATIC gas, I think it is low compared to ETH and BSC.