There are currently four different kinds of levels in Inside Out Thought Bubbles:

• CLEAR ALL MEMORIES (unlocked at level 1) – Clear all orbs from the level. Find your target amount at the top of the screen.
• SKILL SHOTS (unlocked at level 5) – Hit a certain amount of targets by firing orbs directly inside them.
• RESCUE MISSION (unlocked at level 11) – Free the Mind Workers by clearing the orbs around them.
• AVOID THE LINE (unlocked at level 21) – Clear orbs before they reach the line.