To have a good liquidity the game with NFT must be necessary and useful for people.
It must have a big community and a lot of users. In such case the NFT that is used in games will be in demand.
All altcoins are different. A lot depends on altcoins and the demand for them. First of all it is necessary to develop a project and create demand for it. If the project is useful has a developed an ecosystem and a lot of users the demand is such a project will raise and the price of the tokens will raise too.