Pop and Drop is a physics puzzle on Roblox built around one simple goal. You keep the green shapes safe while you clear away the red ones. The STACK PACK applies that same rule to towers and balanced stacks of blocks, where every tap you make changes how the whole pile settles. Get the order wrong and a green block tips off the platform. Get it right and the level closes the moment the screen is clear of red.
Quick answer: Remove every red shape and keep all green shapes resting on the platform when the physics stop moving. The level completes only when no red remains and no green has fallen off the screen.
The core rule behind every STACK PACK level
Pop and Drop is built by Lucentum Games and takes its design from Red Remover. The objective never changes from level to level. Save the greens and remove the reds. In the STACK PACK, the shapes are arranged in stacks, so removing a block underneath causes everything above it to drop, slide, or topple.
Each colour has a fixed behaviour, and the win check is purely about where the green shapes end up once movement stops.
| Shape colour | What it does |
|---|---|
| Red | Must be removed. Tap it to pop it off the board. |
| Green | Must survive on the platform. Never tap a green; it cannot be removed and must not fall off screen. |
| Neutral / grey | Stays in place and acts as structure. Use it to support greens or block a fall. |
Method that solves stacking levels
Tip: If a green is balanced on a narrow edge, leave a supporting red in place until you have removed the reds on the opposite side. Clearing weight evenly keeps a tall stack from tipping in one direction.
How to confirm a level is cleared
A level counts as complete when two conditions are true at the same time. No red shape remains on the board, and every green shape is still resting on screen rather than having fallen past the platform. When both hold, the game registers the win and moves you toward the next level in the pack.
If nothing happens after you clear the last red, check whether a green has slipped off the edge. A green that leaves the screen fails the level even if every red is already gone.
Why a STACK PACK level fails to complete
- A green shape fell off the platform because the block beneath it was removed too early.
- The stack toppled sideways after weight was cleared unevenly from one side.
- You tapped a green by mistake; greens cannot be removed and must stay on the board.
- A red is still hidden behind or beneath another shape, so the board is not actually clear.
When a stack collapses the wrong way, restart the level and change the order you pop the reds. The same shapes will always fall the same way, so a fixed sequence that works once will work every time.
Where the STACK PACK sits among the other packs
Pop and Drop groups its puzzles into separate packs that all share the save-greens, remove-reds rule but add their own twist. The main run covers levels 1 through 60. The TNT pack adds explosive blocks that clear nearby shapes when popped, and the Bouncing Pack adds shapes that rebound instead of dropping straight down. The STACK PACK leans entirely on balance and falling order, which is why reading the tower first matters more here than reacting quickly.
You can launch the puzzle and its packs from the official Lucentum Games page on Roblox. Once you understand that every level is a fixed physics problem with one safe clearing order, the STACK PACK becomes a matter of finding that order and repeating it.
