# Models

- [Free](/old-kb/guides/design/monetization/models/free.md): Truly free games
- [Free to Play](/old-kb/guides/design/monetization/models/free-to-play.md): Zero barrier to entry 👍
- [Pay to Play](/old-kb/guides/design/monetization/models/pay-to-play.md): You pay ... you play ... till operations cost hit then you pay some more
- [Pay to Win](/old-kb/guides/design/monetization/models/pay-to-win.md): Regulator bate
- [Play to Earn](/old-kb/guides/design/monetization/models/play-to-earn.md): No … just don't do it!