An exact ROI on investment cannot be defined, due to various reasons.
The game is free, so it does not require an initial investment to be able to play it.
The ROI depends on the skill of the player (Ranking).
The loot you manage to get per game.
The player may also decide only to market on the marketplace. You can craft your own vehicle (NFT) by playing the game or directly by buying one on the marketplace.
Our model is to ensure that a traditional game can remunerate you some type of benefit for your invested time and that you can do free trade with practically everything that exists and will exist in the R.E.Z universe.