Many free-to-play games quietly favour the players who spend. In my Roblox game I wanted free players to stay competitive, and two systems carry most of that work: daily rewards and economy caps.
Daily rewards give players a reason to come back each day, and none of them require a purchase. Each day there is a fixed number of rewarded actions, and once a player reaches it, rewards pause until the next day. Steady play pays off, and nobody can grind or buy far ahead in a single session.
Economy caps cover the other side. Every interaction has a ceiling on how much value it can add to a player's account, so a single transaction cannot distort the game for everyone else. A second cap limits cumulative rewards over time, which keeps small gains from stacking into a gap that free players could never close.
With both in place, free and paying players share one economy. Paying gives players extras, and it never splits the game into two different experiences.
I built these rules into the core of the game from the first version, since adding fairness afterwards means reworking everything that touches the economy.
If you're building a game on the side, decide early how much value one action or purchase can create, and put a limit on it. I'd like to hear how you handle rewards in your own projects.
