Ok this question actually can lead 2 answer as there is exclusive mode for racing itself:
for Main game there are multiple gameplay: exploration, racing, simulation, dungeon, endurance. Will be given detail on gamebook. The racing mode is focused on ranked matchmaking multiplayers, so user will have emotion involvement in their gaming. (e.g If a player keeps losing, they might want to keep playing until they win or they might encounter a situation that makes them rage, creating an emotional attachment that is important for nurturing addiction )
While exploration focused on mystery collection and leaderboard achievements ( e.g: so there will be information of achievements, 1st player found the Planet XYZ → 0x213 ) but some exploration zone can enter with team too.
The exploration itself actually more into a survival racing too like temple run where player cannot control the speed and need to avoid objects, and getting harder, and the mode will be similar, but you can use the ability too later. While also can explore a lot of NFTs and find Outpost, Planet, Random Portal, catastrophic that you can mint those into NFT and become a new zone later.
To be mainly to engaged in long term, it will also depends of the mystery aspect, and each difficulty will require another starship or another ability that can handle each situation differently. I want players curious to finish the zone challenge, interact with community how they do it, and how they able to find those items in what zone, etc. Luckily this is can be created by crafting so player can collect/farming those materials and choose to use it to enter more advance zone and get more rarer nft or they can choose to sell it to the marketplace.
For increasing the difficulty and challenge:
It explained a bit, the zone ( which is the gameplay ) will be NFT and has tier, each tier has different challenge, and terrain. The higher tier obviously is more difficult. Like making the rock explode, or enemy chasing, and nearing a big asteroid has gravity challenge, or just increase the speed or quantity. There are many challenges available actually, like blackhole, storm-space, pirate, etc, and most of challenge i got inspired from other game too. I want to make awesome game that i can enjoy to play too.