1. Launch the game "Black Hole vs Monster" on your mobile device.

2. Use the on-screen joystick or swipe your finger to control the movement of the black hole.

3. Move your black hole around the battlefield to absorb smaller units and objects.

4. As you absorb more items, your black hole grows in size and power.

5. Gather an army by pulling in specific units or objects that become part of your force.

6. Approach monsters strategically and let your army engage in combat automatically.

7. Defeat the monsters to earn rewards, experience points, and power-ups.

8. After each battle, use your earned currency to upgrade your black hole’s size, strength, and absorption power.

9. As you progress, face stronger and larger boss monsters that require a bigger army and better upgrades.

10. Keep collecting, upgrading, and fighting to overcome increasingly difficult levels.

11. Watch out for obstacles and enemy attacks that can slow down your progress or damage your army.

12. Continue growing your black hole, gathering allies, and defeating monsters to dominate the battlefield.