The 51 Bonus Can Only Be Unlocked With Specific Skills. Rummy's 51 bonus can only be unlocked through a combination of skill, strategy, and persistence. The necessanew online slots 2023ry progression of 51 games must be finished by players by virtue of their ability to win games consistently and keep from dropping out. They must therefore possess the flexibility to adjust to various playing styles, the ability to read the movements of their opponents, and the ability to make decisions quickly and accurately.